bugfix for ios_config module

This commit address a bug in the ios_config module when using the
match: strict argument.  When the argument is used, the module will
compare the configuration block same as match: exact which is not the
intended behavior.  This commit updates the behavior to propertly handle
the strict argument.

lib/ansible/modules/network/ios/ios_config.py

@@ -166,9 +166,6 @@ def build_candidate(lines, parents, config, strategy):
     candidate = list()
 
     if strategy == 'strict':
-        if len(lines) != len(config):
-            candidate = list(lines)
-        else:
         for index, cmd in enumerate(lines):
             try:
                 if cmd != config[index]: