Harmonize pylintrc with baseimage repo

.pylintrc

@@ -1,5 +1,12 @@
 [TYPECHECK]
 
 ignored-modules = zmq
-max-line-length = 150
+max-line-length = 120
 disable = missing-docstring, too-few-public-methods, invalid-name
+
+[SIMILARITIES]
+
+min-similarity-lines=6
+ignore-comments=yes
+ignore-docstrings=yes
+ignore-imports=yes