add state to awx license module

awx_collection/plugins/modules/license.py

@@ -31,6 +31,12 @@ options:
           unlicensed or trial licensed.  When force=true, the license is always applied.
       type: bool
       default: 'False'
+    state:
+      description:
+        - Desired state of the resource.
+      default: "present"
+      choices: ["present", "absent"]
+      type: str
 extends_documentation_fragment: awx.awx.auth
 '''
 
@@ -40,6 +46,10 @@ EXAMPLES = '''
 - name: Set the license using a file
   license:
     manifest: "/tmp/my_manifest.zip"
+
+- name: Remove license
+  license:
+    state: absent
 '''
 
 import base64
@@ -50,13 +60,23 @@ def main():
 
     module = ControllerAPIModule(
         argument_spec=dict(
-            manifest=dict(type='str', required=True),
+            manifest=dict(type='str', required=False),
             force=dict(type='bool', default=False),
+            state=dict(choices=['present', 'absent'], default='present'),
         ),
+        required_if=[
+            ['state', 'present', ['manifest']],
+        ],
     )
 
     json_output = {'changed': False}
 
+    # If the state was absent we can delete the endpoint and exit.
+    state = module.params.get('state')
+    if state == 'absent':
+        module.delete_endpoint('config')
+        module.exit_json(**json_output)
+
     try:
         with open(module.params.get('manifest'), 'rb') as fid:
             manifest = base64.b64encode(fid.read())