Merge "add nova-manage bash completion script"

bin/nova-manage

@@ -1692,6 +1692,18 @@ def main():
             print "\t%s" % k
         sys.exit(2)
     category = argv.pop(0)
+    if category == "bash-completion":
+        if len(argv) < 1:
+            print " ".join([k for (k, v) in CATEGORIES])
+        else:
+            query_category = argv.pop(0)
+            matches = lazy_match(query_category, CATEGORIES)
+            # instantiate the command group object
+            category, fn = matches[0]
+            command_object = fn()
+            actions = methods_of(command_object)
+            print " ".join([k for (k, v) in actions])
+        sys.exit(0)
     matches = lazy_match(category, CATEGORIES)
     # instantiate the command group object
     category, fn = matches[0]