robot: Run only relevant tests, push to core-*

From now on images built from this repo are the c3os core images.
c3os core images contains only the base image, framework files and the c3os agent.

This also sets up tests accordingly to run only to cover the c3os-agent.

cmd/agent/main.go

@@ -193,13 +193,13 @@ E.g. c3os-agent install-bundle container:quay.io/c3os/c3os...
 	{
 		Name: "interactive-install",
 		Description: `
-Starts c3os in interactive mode.
+Starts c3os in interactive mode install.
 
-It will ask prompt for several questions and perform an install
+It will ask prompt for several questions and perform an install depending on the providers available in the system.
 
 See also https://docs.c3os.io/installation/interactive_install/ for documentation.
 
-This command is meant to be used from the boot GRUB menu, but can be started manually`,
+This command is meant to be used from the boot GRUB menu, but can be also started manually`,
 		Flags: []cli.Flag{
 			&cli.BoolFlag{
 				Name: "shell",
@@ -266,24 +266,15 @@ func main() {
 	bus.Manager.Initialize()
 
 	app := &cli.App{
-		Name:    "c3os",
+		Name:    "c3os-agent",
 		Version: "0.1",
 		Author:  "Ettore Di Giacinto",
-		Usage:   "c3os CLI to bootstrap, upgrade, connect and manage a c3os network",
+		Usage:   "c3os agent start",
 		Description: `
-The c3os CLI can be used to manage a c3os box and perform all day-two tasks, like:
-- register a node
-- connect to a node in recovery mode
-- to establish a VPN connection
-- set, list roles
-- interact with the network API
-
-and much more.
-
-For all the example cases, see: https://docs.c3os.io .
+The c3os agent is a component to abstract away node ops, providing a common feature-set across c3os variants.
 `,
 		UsageText: ``,
-		Copyright: "Ettore Di Giacinto",
+		Copyright: "c3os authors",
 
 		Commands: cmds,
 	}