[Techinal Debt] Cleanup ABI vs. Tunnel CLI commands

[NO TESTS NEEDED]

This commit cleans up two issues:
* Most commands support all EngineModes so default to that. Let
  outlayers declare their intent.
* Use cobra.Annotations to set supported EngineMode. This simplies
  instantiating commands as there is now one method to communicate a
  commands requirements rather than two.
* Combined aliased commands into one file
* Fixed aliased commands where Args field did not match
* Updated examples in README.md for writing commands
* Remove redundant flag DisableFlagsInUseLine in cobra.Command
  initialization.

Signed-off-by: Jhon Honce <jhonce@redhat.com>

1 files changed, 16 insertions, 20 deletions

diff --git a/cmd/podman/images/untag.go b/cmd/podman/images/untag.go
index 4344e1847..4c1862242 100644
--- a/cmd/podman/images/untag.go
+++ b/cmd/podman/images/untag.go
@@ -8,27 +8,25 @@ import (
 )
 
 var (
-	untagCommand = &cobra.Command{
-		Use:                   "untag IMAGE [IMAGE...]",
-		Short:                 "Remove a name from a local image",
-		Long:                  "Removes one or more names from a locally-stored image.",
-		RunE:                  untag,
-		Args:                  cobra.MinimumNArgs(1),
-		DisableFlagsInUseLine: true,
-		ValidArgsFunction:     common.AutocompleteImages,
+	untagCmd = &cobra.Command{
+		Use:               "untag IMAGE [IMAGE...]",
+		Short:             "Remove a name from a local image",
+		Long:              "Removes one or more names from a locally-stored image.",
+		RunE:              untag,
+		Args:              cobra.MinimumNArgs(1),
+		ValidArgsFunction: common.AutocompleteImages,
 		Example: `podman untag 0e3bbc2
   podman untag imageID:latest otherImageName:latest
   podman untag httpd myregistryhost:5000/fedora/httpd:v2`,
 	}
 
-	imageUntagCommand = &cobra.Command{
-		Args:                  untagCommand.Args,
-		DisableFlagsInUseLine: true,
-		Use:                   untagCommand.Use,
-		Short:                 untagCommand.Short,
-		Long:                  untagCommand.Long,
-		RunE:                  untagCommand.RunE,
-		ValidArgsFunction:     untagCommand.ValidArgsFunction,
+	imageUntagCmd = &cobra.Command{
+		Args:              untagCmd.Args,
+		Use:               untagCmd.Use,
+		Short:             untagCmd.Short,
+		Long:              untagCmd.Long,
+		RunE:              untagCmd.RunE,
+		ValidArgsFunction: untagCmd.ValidArgsFunction,
 		Example: `podman image untag 0e3bbc2
   podman image untag imageID:latest otherImageName:latest
   podman image untag httpd myregistryhost:5000/fedora/httpd:v2`,
@@ -37,12 +35,10 @@ var (
 
 func init() {
 	registry.Commands = append(registry.Commands, registry.CliCommand{
-		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
-		Command: untagCommand,
+		Command: untagCmd,
 	})
 	registry.Commands = append(registry.Commands, registry.CliCommand{
-		Mode:    []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
-		Command: imageUntagCommand,
+		Command: imageUntagCmd,
 		Parent:  imageCmd,
 	})
 }