Add help output to each subcommand.

This is the same as the output at the top level, just trimmed down to
only the options for a single subcommand.  It's trigged by providing
"help" or "--help" as a subcommand option.

(cherry picked from commit f5115291bd)

src/composer/cli/blueprints.py

@@ -21,6 +21,7 @@ import os
 import json
 
 from composer import http_client as client
+from composer.cli.help import blueprints_help
 from composer.cli.utilities import argify, frozen_toml_filename, toml_filename, handle_api_result
 from composer.cli.utilities import packageNEVRA
 
@@ -48,7 +49,10 @@ def blueprints_cmd(opts):
         "undo":      blueprints_undo,
         "workspace": blueprints_workspace
         }
-    if opts.args[1] not in cmd_map:
+    if opts.args[1] == "help" or opts.args[1] == "--help":
+        print(blueprints_help)
+        return 0
+    elif opts.args[1] not in cmd_map:
         log.error("Unknown blueprints command: %s", opts.args[1])
         return 1
 

src/composer/cli/compose.py

@@ -21,6 +21,7 @@ import sys
 import json
 
 from composer import http_client as client
+from composer.cli.help import compose_help
 from composer.cli.utilities import argify, handle_api_result, packageNEVRA
 
 def compose_cmd(opts):
@@ -46,7 +47,10 @@ def compose_cmd(opts):
         "logs":     compose_logs,
         "image":    compose_image,
         }
-    if opts.args[1] not in cmd_map:
+    if opts.args == "help" or opts.args == "--help":
+        print(compose_help)
+        return 0
+    elif opts.args[1] not in cmd_map:
         log.error("Unknown compose command: %s", opts.args[1])
         return 1
 

src/composer/cli/modules.py

@@ -20,6 +20,7 @@ log = logging.getLogger("composer-cli")
 import json
 
 from composer import http_client as client
+from composer.cli.help import modules_help
 
 def modules_cmd(opts):
     """Process modules commands
@@ -29,7 +30,10 @@ def modules_cmd(opts):
     :returns: Value to return from sys.exit()
     :rtype: int
     """
-    if opts.args[1] != "list":
+    if opts.args[1] == "help" or opts.args[1] == "--help":
+        print(modules_help)
+        return 0
+    elif opts.args[1] != "list":
         log.error("Unknown modules command: %s", opts.args[1])
         return 1
 

src/composer/cli/projects.py

@@ -21,6 +21,7 @@ import json
 import textwrap
 
 from composer import http_client as client
+from composer.cli.help import projects_help
 
 def projects_cmd(opts):
     """Process projects commands
@@ -34,7 +35,10 @@ def projects_cmd(opts):
         "list":      projects_list,
         "info":      projects_info,
         }
-    if opts.args[1] not in cmd_map:
+    if opts.args[1] == "help" or opts.args[1] == "--help":
+        print(projects_help)
+        return 0
+    elif opts.args[1] not in cmd_map:
         log.error("Unknown projects command: %s", opts.args[1])
         return 1
 

src/composer/cli/sources.py

@@ -21,6 +21,7 @@ import os
 import json
 
 from composer import http_client as client
+from composer.cli.help import sources_help
 from composer.cli.utilities import argify, handle_api_result
 
 def sources_cmd(opts):
@@ -38,7 +39,10 @@ def sources_cmd(opts):
         "change":   sources_add,
         "delete":   sources_delete,
         }
-    if opts.args[1] not in cmd_map:
+    if opts.args[1] == "help" or opts.args[1] == "--help":
+        print(sources_help)
+        return 0
+    elif opts.args[1] not in cmd_map:
         log.error("Unknown sources command: %s", opts.args[1])
         return 1