[stable-8] Fix pylint and pep8 issues exposed by latest ansible-core's ansible-test sanity checks (#8723)

Fix pylint and pep8 issues exposed by latest ansible-core's ansible-test sanity checks (#8720)

* Remove bad whitespace.

* 'Fixing' various used-before-assignment issues that pylint flagged.

(cherry picked from commit 9a16eaf9ba)

plugins/modules/snmp_facts.py

@@ -307,6 +307,8 @@ def main():
         if m_args['community'] is None:
             module.fail_json(msg='Community not set when using snmp version 2')
 
+    integrity_proto = None
+    privacy_proto = None
     if m_args['version'] == "v3":
         if m_args['username'] is None:
             module.fail_json(msg='Username not set when using snmp version 3')