Fix sanity issues. (#4346) (#4358)

(cherry picked from commit ca2c64b5ca)

plugins/inventory/cobbler.py

@@ -47,6 +47,7 @@ DOCUMENTATION = '''
       group_by:
         description: Keys to group hosts by
         type: list
+        elements: string
         default: [ 'mgmt_classes', 'owners', 'status' ]
       group:
         description: Group to place all hosts into

plugins/inventory/gitlab_runners.py

@@ -35,7 +35,6 @@ DOCUMENTATION = '''
                 version_added: 1.0.0
             type: str
             required: true
-            default: https://gitlab.com
         api_token:
             description: GitLab token for logging in.
             env:

plugins/inventory/linode.py

@@ -43,15 +43,18 @@ DOCUMENTATION = r'''
           description: Populate inventory with instances in this region.
           default: []
           type: list
+          elements: string
         tags:
           description: Populate inventory only with instances which have at least one of the tags listed here.
           default: []
           type: list
+          elements: string
           version_added: 2.0.0
         types:
           description: Populate inventory with instances with this type.
           default: []
           type: list
+          elements: string
         strict:
           version_added: 2.0.0
         compose:

plugins/inventory/nmap.py

@@ -27,6 +27,7 @@ DOCUMENTATION = '''
         exclude:
             description: list of addresses to exclude
             type: list
+            elements: string
         ports:
             description: Enable/disable scanning for open ports
             type: boolean

plugins/inventory/online.py

@@ -28,6 +28,7 @@ DOCUMENTATION = r'''
         hostnames:
             description: List of preference about what to use as an hostname.
             type: list
+            elements: string
             default:
                 - public_ipv4
             choices:
@@ -37,6 +38,7 @@ DOCUMENTATION = r'''
         groups:
             description: List of groups.
             type: list
+            elements: string
             choices:
                 - location
                 - offer

plugins/inventory/scaleway.py

@@ -23,6 +23,7 @@ DOCUMENTATION = r'''
         regions:
             description: Filter results on a specific Scaleway region.
             type: list
+            elements: string
             default:
                 - ams1
                 - par1
@@ -31,6 +32,7 @@ DOCUMENTATION = r'''
         tags:
             description: Filter results on a specific tag.
             type: list
+            elements: string
         oauth_token:
             description:
             - Scaleway OAuth token.
@@ -45,6 +47,7 @@ DOCUMENTATION = r'''
         hostnames:
             description: List of preference about what to use as an hostname.
             type: list
+            elements: string
             default:
                 - public_ipv4
             choices: