Update validate-modules (#20932)

* Update validate-modules

* Validates ANSIBLE_METADATA
* Ensures imports happen after documentation vars
* Some pep8 cleanup

* Clean up some left over unneeded code

* Update modules for new module guidelines and validate-modules checks

* Update imports for ec2_vpc_route_table and ec2_vpc_nat_gateway

lib/ansible/modules/web_infrastructure/supervisorctl.py

@@ -18,9 +18,6 @@
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 #
-import os
-from ansible.module_utils.basic import AnsibleModule, is_executable
-
 ANSIBLE_METADATA = {'status': ['preview'],
                     'supported_by': 'community',
                     'version': '1.0'}
@@ -111,6 +108,9 @@ EXAMPLES = '''
     server_url: http://localhost:9001
 '''
 
+import os
+from ansible.module_utils.basic import AnsibleModule, is_executable
+
 
 def main():
     arg_spec = dict(