Make resource_tags required and do whitespace cleanup

library/cloud/ec2_vpc

@@ -59,7 +59,7 @@ options:
   resource_tags:
     description:
       - 'A dictionary array of resource tags of the form: { tag1: value1, tag2: value2 }.  Tags in this list are used in conjunction with CIDR block to uniquely identify a VPC in lieu of vpc_id. Therefore, if CIDR/Tag combination does not exits, a new VPC will be created.  VPC tags not on this list will be ignored.'
-    required: false
+    required: true
     default: null
     aliases: []
     version_added: "1.6"
@@ -270,6 +270,7 @@ def create_vpc(module, vpc_conn):
     subnets = module.params.get('subnets')
     internet_gateway = module.params.get('internet_gateway')
     route_tables = module.params.get('route_tables')
+    vpc_spec_tags = module.params.get('resource_tags')
     wait = module.params.get('wait')
     wait_timeout = int(module.params.get('wait_timeout'))
     changed = False
@@ -306,10 +307,9 @@ def create_vpc(module, vpc_conn):
     # Done with base VPC, now change to attributes and features.
 
     # Add resource tags
-    vpc_spec_tags = module.params.get('resource_tags')
     vpc_tags = dict((t.name, t.value) for t in vpc_conn.get_all_tags(filters={'resource-id': vpc.id}))
 
-    if vpc_spec_tags and not set(vpc_spec_tags.items()).issubset(set(vpc_tags.items())):
+    if not set(vpc_spec_tags.items()).issubset(set(vpc_tags.items())):
         new_tags = {}
 
         for (key, value) in set(vpc_spec_tags.items()):
@@ -408,7 +408,7 @@ def create_vpc(module, vpc_conn):
     if route_tables and not isinstance(route_tables, list):
         module.fail_json(msg='route tables need to be a list of dictionaries')
 
-# Work through each route table and update/create to match dictionary array
+    # Work through each route table and update/create to match dictionary array
     all_route_tables = []
     for rt in route_tables:
         try:
@@ -564,7 +564,7 @@ def main():
             subnets = dict(type='list'),
             vpc_id = dict(),
             internet_gateway = dict(type='bool', default=False),
-            resource_tags = dict(type='dict'),
+            resource_tags = dict(type='dict', required=True),
             route_tables = dict(type='list'),
             state = dict(choices=['present', 'absent'], default='present'),
         )