Add bash completion for exec (#579)

Author: kit494way

completions/bash/aws-gate

@@ -3,6 +3,7 @@
 __aws_gate_complete_commands() {
     local commands="
         bootstrap
+        exec
         list ls
         session
         ssh
@@ -96,6 +97,28 @@ __aws_gate_complete_list() {
     esac
 }
 
+__aws_gate_complete_exec() {
+    case "${prev}" in
+        -p|--profile)
+            __aws_gate_complete_opt_profile
+            ;;
+        -r|--region)
+            __aws_gate_complete_opt_region
+            ;;
+        *)
+            local args="
+                -h --help
+                -p --profile
+                -r --region
+            "
+
+            __aws_gate_merge_hosts_to_args
+
+            COMPREPLY=( $(compgen -W "${args}" -- "${cur}") )
+            ;;
+    esac
+}
+
 __aws_gate_complete_opt_profile() {
     local aws_profiles="
       $(grep '\[' ~/.aws/credentials | grep -v '#' | tr -d '[' | tr -d ']')
@@ -210,6 +233,9 @@ __aws_gate_complete() {
                 bootstrap)
                     __aws_gate_complete_bootstrap
                     ;;
+                exec)
+                    __aws_gate_complete_exec
+                    ;;
                 session)
                     __aws_gate_complete_session
                     ;;