Manually fix issues that autopep8 introduced

* iam.py 161 -> 160 chars
* lamba -> single line function -> multiline function

Avoid redefining key

iam line length

iam.py now clean

lib/ansible/modules/net_tools/snmp_facts.py

@@ -243,7 +243,8 @@ def main():
     # Use v without a prefix to use with return values
     v = DefineOid(dotprefix=False)
 
-    def Tree(): return defaultdict(Tree)
+    def Tree():
+        return defaultdict(Tree)
 
     results = Tree()