Convert to reduced list of known types (#50010)

lib/ansible/modules/commands/command.py

@@ -124,17 +124,17 @@ cmd:
 delta:
   description: cmd end time - cmd start time
   returned: always
-  type: string
+  type: str
   sample: 0:00:00.001529
 end:
   description: cmd end time
   returned: always
-  type: string
+  type: str
   sample: '2017-09-29 22:03:48.084657'
 start:
   description: cmd start time
   returned: always
-  type: string
+  type: str
   sample: '2017-09-29 22:03:48.083128'
 '''
 

lib/ansible/modules/commands/shell.py

@@ -146,37 +146,37 @@ RETURN = r'''
 msg:
     description: changed
     returned: always
-    type: boolean
+    type: bool
     sample: True
 start:
     description: The command execution start time
     returned: always
-    type: string
+    type: str
     sample: '2016-02-25 09:18:26.429568'
 end:
     description: The command execution end time
     returned: always
-    type: string
+    type: str
     sample: '2016-02-25 09:18:26.755339'
 delta:
     description: The command execution delta time
     returned: always
-    type: string
+    type: str
     sample: '0:00:00.325771'
 stdout:
     description: The command standard output
     returned: always
-    type: string
+    type: str
     sample: 'Clustering node rabbit@slave1 with rabbit@master ...'
 stderr:
     description: The command standard error
     returned: always
-    type: string
+    type: str
     sample: 'ls: cannot access foo: No such file or directory'
 cmd:
     description: The command executed by the task
     returned: always
-    type: string
+    type: str
     sample: 'rabbitmqctl join_cluster rabbit@master'
 rc:
     description: The command return code (0 means success)