Refactor astartectl utils interfaces, triggers

Add validation confirmation messages for Astarte Interface and Trigger

Signed-off-by: Osman Hadzic <osman.hadzic@secomind.com>

Author: osmanhadzic

cmd/utils/interfaces.go

@@ -35,7 +35,7 @@ var validateInterfaceCmd = &cobra.Command{
 Note that the checks performed by this function are not as thorough as the ones performed by Astarte, so there could be false positives (but no false negatives).
 This command is thought to be used in CI pipelines to validate that new interfaces are "reasonable enough".
 
-Returns 0 and does not print anything if the interface is valid, returns 1 and prints an error message if it isn't.`,
+Returns 0 and print message if the interface is valid, returns 1 and prints an error message if it isn't.`,
 	Example: `  astartectl utils interfaces validate com.my.Interface.json`,
 	Args:    cobra.ExactArgs(1),
 	RunE:    validateInterfaceF,
@@ -57,5 +57,7 @@ func validateInterfaceF(command *cobra.Command, args []string) error {
 		os.Exit(1)
 	}
 
+	fmt.Printf("%s is a valid Astarte Interface\n", interfacePath)
+
 	return nil
 }

cmd/utils/triggers.go

@@ -35,7 +35,7 @@ var validateTriggerCmd = &cobra.Command{
 Note that the checks performed by this function are not as thorough as the ones performed by Astarte, so there could be false positives (but no false negatives).
 This command is thought to be used in CI pipelines to validate that new triggers are "reasonable enough".
 
-Returns 0 and does not print anything if the trigger is valid, returns 1 and prints an error message if it isn't.`,
+Returns 0 and print message if the trigger is valid, returns 1 and prints an error message if it isn't.`,
 	Example: `  astartectl utils triggers validate my_trigger.json`,
 	Args:    cobra.ExactArgs(1),
 	RunE:    validateTriggerF,
@@ -57,5 +57,7 @@ func validateTriggerF(command *cobra.Command, args []string) error {
 		os.Exit(1)
 	}
 
+	fmt.Printf("%s is a valid Astarte Trigger\n", triggerPath)
+
 	return nil
 }