Reverting some ResourceRef changes (#226)

Signed-off-by: Modular Magician <magic-modules@google.com>

plugins/modules/gcp_compute_subnetwork.py

@@ -89,9 +89,10 @@ options:
     - The network this subnet belongs to.
     - Only networks that are in the distributed mode can have subnetworks.
     - 'This field represents a link to a Network resource in GCP. It can be specified
-      in two ways. First, you can place in the selfLink of the resource here as a
-      string Alternatively, you can add `register: name-of-resource` to a gcp_compute_network
-      task and then set this network field to "{{ name-of-resource }}"'
+      in two ways. First, you can place a dictionary with key ''selfLink'' and value
+      of your resource''s selfLink Alternatively, you can add `register: name-of-resource`
+      to a gcp_compute_network task and then set this network field to "{{ name-of-resource
+      }}"'
     required: true
   enable_flow_logs:
     description:
@@ -206,7 +207,7 @@ network:
   - The network this subnet belongs to.
   - Only networks that are in the distributed mode can have subnetworks.
   returned: success
-  type: str
+  type: dict
 enableFlowLogs:
   description:
   - Whether to enable flow logging for this subnetwork.
@@ -276,7 +277,7 @@ def main():
             description=dict(type='str'),
             ip_cidr_range=dict(required=True, type='str'),
             name=dict(required=True, type='str'),
-            network=dict(required=True),
+            network=dict(required=True, type='dict'),
             enable_flow_logs=dict(type='bool'),
             secondary_ip_ranges=dict(
                 type='list', elements='dict', options=dict(range_name=dict(required=True, type='str'), ip_cidr_range=dict(required=True, type='str'))