Execution environment image should not be required (#14488)

awx_collection/plugins/modules/execution_environment.py

@@ -33,7 +33,6 @@ options:
     image:
       description:
         - The fully qualified url of the container image.
-      required: True
       type: str
     description:
       description:
@@ -79,7 +78,7 @@ def main():
     argument_spec = dict(
         name=dict(required=True),
         new_name=dict(),
-        image=dict(required=True),
+        image=dict(),
         description=dict(),
         organization=dict(),
         credential=dict(),