Resolve govet copylocks lint errors

[austinvazquez]

The following lint errors should be resolved:

Error: runtime/service.go:1032:10: copylocks: range var ni copies lock: github.com/firecracker-microvm/firecracker-containerd/proto.FirecrackerNetworkInterface contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
		for _, ni := range s.config.DefaultNetworkInterfaces {

Error: runtime/service.go:1033:14: copylocks: assignment copies lock value to niCopy: github.com/firecracker-microvm/firecracker-containerd/proto.FirecrackerNetworkInterface contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			niCopy := ni // we don't want to allow any further calls to modify structs in s.config.DefaultNetworkInterfaces
			          ^
Error: runtime/benchmark_test.go:35:10: copylocks: createAndStopVM passes lock by value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
	request proto.CreateVMRequest,
	        ^
Error: runtime/benchmark_test.go:81:50: copylocks: call of createAndStopVM copies lock value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
		elapsed, err := createAndStopVM(ctx, fcClient, request)
		                                               ^
Error: runtime/service_integ_test.go:763:9: copylocks: range var subtest copies lock: struct{name string; request github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest} contains github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
	for _, subtest := range subtests {
	       ^
Error: runtime/service_integ_test.go:764:14: copylocks: assignment copies lock value to request: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
		request := subtest.request
		           ^
Error: runtime/service_integ_test.go:1698:98: copylocks: func passes lock by value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			stopFunc: func(ctx context.Context, tb testing.TB, fcClient fccontrol.FirecrackerService, req proto.CreateVMRequest) {
			                                                                                              ^
Error: runtime/service_integ_test.go:1716:98: copylocks: func passes lock by value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			stopFunc: func(ctx context.Context, tb testing.TB, fcClient fccontrol.FirecrackerService, req proto.CreateVMRequest) {
			                                                                                              ^
Error: runtime/service_integ_test.go:1730:89: copylocks: func passes lock by value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			stopFunc: func(ctx context.Context, tb testing.TB, _ fccontrol.FirecrackerService, _ proto.CreateVMRequest) {
			                                                                                     ^
Error: runtime/service_integ_test.go:1820:9: copylocks: range var test copies lock: struct{name string; createVMRequest github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest; stopFunc func(ctx context.Context, tb testing.TB, fcClient github.com/firecracker-microvm/firecracker-containerd/proto/service/fccontrol/ttrpc.FirecrackerService, req github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest); withStopVM bool} contains github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
	for _, test := range tests {
	       ^
Error: runtime/service_integ_test.go:1851:37: copylocks: call of test.stopFunc copies lock value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			test.stopFunc(ctx, tb, fcClient, createVMRequest)
			                                 ^
Error: runtime/service_integ_test.go:1870:11: copylocks: assignment copies lock value to req: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			req := test.createVMRequest
			       ^
Error: runtime/service_integ_test.go:1872:16: copylocks: call of testFunc copies lock value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			testFunc(t, req)
			            ^
Error: runtime/service_integ_test.go:1876:11: copylocks: assignment copies lock value to req: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			req := test.createVMRequest
			       ^
Error: runtime/service_integ_test.go:1882:16: copylocks: call of testFunc copies lock value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			testFunc(t, req)
Error: runtime/service_integ_test.go:2350:9: copylocks: range var s copies lock: github.com/firecracker-microvm/firecracker-containerd/runtime.subtest contains github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
	for _, s := range subtests {
	       ^
Error: runtime/service_integ_test.go:2351:14: copylocks: assignment copies lock value to request: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
		request := s.request
		           ^
Error: runtime/service_integ_test.go:2353:15: copylocks: call of runTest copies lock value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			runTest(t, request, s)
			           ^
Error: runtime/service_integ_test.go:2356:24: copylocks: assignment copies lock value to requestWithJailer: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
		requestWithJailer := s.request
		                     ^
Error: runtime/service_integ_test.go:2362:15: copylocks: call of runTest copies lock value: github.com/firecracker-microvm/firecracker-containerd/proto.CreateVMRequest contains google.golang.org/protobuf/runtime/protoimpl.MessageState contains sync.Mutex (govet)
			runTest(t, requestWithJailer, s)

[austinvazquez]

Success criteria is these lines can be removed from .golangci.yml

    - linters:
      - govet
      text: "copylocks"