Use arch agnostic path for ContrastChainLoader

The agent-operator-images for the dotnet-core agent copies the ContrastChainLoader.so to /runtimes/linux/native based on arch at image build time

Author: gamingrobot

src/Contrast.K8s.AgentOperator/Core/Reactions/Injecting/Patching/Agents/DotNetPatcher.cs

@@ -25,7 +25,7 @@ public IEnumerable<V1EnvVar> GenerateEnvVars(PatchingContext context)
         if (_injectorOptions.EnableEarlyChaining)
         {
             yield return new V1EnvVar("LD_PRELOAD",
-                $"{context.AgentMountPath}/runtimes/linux-x64/native/ContrastChainLoader.so");
+                $"{context.AgentMountPath}/runtimes/linux/native/ContrastChainLoader.so");
         }
         else
         {
@@ -63,7 +63,7 @@ public void PatchContainer(V1Container container, PatchingContext context)
         {
             container.Env.AddOrUpdate(new V1EnvVar("CONTRAST_EXISTING_LD_PRELOAD", currentLdPreloadValue));
             container.Env.AddOrUpdate(new V1EnvVar("LD_PRELOAD",
-                $"{context.AgentMountPath}/runtimes/linux-x64/native/ContrastChainLoader.so:{currentLdPreloadValue}"));
+                $"{context.AgentMountPath}/runtimes/linux/native/ContrastChainLoader.so:{currentLdPreloadValue}"));
         }
     }
 

tests/Contrast.K8s.AgentOperator.FunctionalTests/Scenarios/Injection/Agents/DotnetChainingInjectionTests.cs

@@ -36,7 +36,7 @@ public async Task When_injected_then_pod_should_have_agent_injection_chaining_en
             var container = result.Spec.Containers.Should().ContainSingle().Subject;
 
             container.Env.Should().Contain(x => x.Name == "LD_PRELOAD")
-                     .Which.Value.Should().Be("/contrast/agent/runtimes/linux-x64/native/ContrastChainLoader.so:something");
+                     .Which.Value.Should().Be("/contrast/agent/runtimes/linux/native/ContrastChainLoader.so:something");
             container.Env.Should().Contain(x => x.Name == "CONTRAST_EXISTING_LD_PRELOAD")
                      .Which.Value.Should().Be("something");
         }

tests/Contrast.K8s.AgentOperator.Tests/Core/Reactions/Injecting/Patching/Agents/DotNetPatcherTests.cs

@@ -87,7 +87,7 @@ public void PatchContainer_should_add_ld_preload_if_already_set()
                          .Contain(x => x.Name == "CONTRAST_EXISTING_LD_PRELOAD" && x.Value == existingPreload);
                 container.Env.Should().Contain(x =>
                     x.Name == "LD_PRELOAD" && x.Value ==
-                    $"{context.AgentMountPath}/runtimes/linux-x64/native/ContrastChainLoader.so:{existingPreload}");
+                    $"{context.AgentMountPath}/runtimes/linux/native/ContrastChainLoader.so:{existingPreload}");
             }
         }