Use a much simpler initialization process for controller. (#912)

* Use a much simpler initialization process for controller.

* We can delay this a bit.

atrium/vestibulum/trcshbase/trcsh.go

@@ -402,7 +402,6 @@ func acceptRemote(featherCtx *cap.FeatherContext, mode int, remote string) (bool
 }
 
 func featherCtlCb(featherCtx *cap.FeatherContext, agentName string) error {
-
 	if gAgentConfig == nil {
 		return errors.New("incorrect agent initialization")
 	}
@@ -411,6 +410,9 @@ func featherCtlCb(featherCtx *cap.FeatherContext, agentName string) error {
 		return errors.New("incorrect feathering")
 	}
 
+	// Initialize supoorted deployers.
+	deployopts.BuildOptions.InitSupportedDeployers([]string{agentName})
+
 	if sessionIdentifier, ok := deployopts.BuildOptions.GetEncodedDeployerId(agentName, *featherCtx.Env); ok {
 		featherCtx.SessionIdentifier = &sessionIdentifier
 		featherCtx.Log.Printf("Starting deploy ctl session: %s\n", sessionIdentifier)
@@ -724,15 +726,6 @@ func ProcessDeploy(featherCtx *cap.FeatherContext, config *eUtils.DriverConfig,
 		config.EndDir = "."
 		config.Log.Printf("Preloading path %s env %s\n", trcPath, config.EnvRaw)
 
-		// Initialize deployers.
-		deployments, err := deployutil.GetDeployers(config)
-		if err != nil {
-			fmt.Println("Error could not load deployers.  Invalid installation.")
-			config.Log.Printf("Error could not load deployers.  Invalid installation.\n")
-			os.Exit(-1)
-		}
-		deployopts.BuildOptions.InitSupportedDeployers(deployments)
-
 		configErr := trcconfigbase.CommonMain(&config.EnvRaw, &mergedVaultAddress, &token, &mergedEnvRaw, &configRoleSlice[1], &configRoleSlice[0], &tokenName, &region, nil, []string{"trcsh"}, config)
 		if configErr != nil {
 			fmt.Println("Preload failed.  Couldn't find required resource.")