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/network/lldp.py

@@ -14,8 +14,6 @@
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 
-import subprocess
-
 ANSIBLE_METADATA = {'status': ['preview'],
                     'supported_by': 'community',
                     'version': '1.0'}
@@ -51,6 +49,9 @@ EXAMPLES = '''
 
 '''
 
+import subprocess
+
+
 def gather_lldp():
     cmd = ['lldpctl', '-f', 'keyvalue']
     proc = subprocess.Popen(cmd, stdout=subprocess.PIPE)