Add two missing ignores for conformance directory.

.gitignore

@@ -111,5 +111,7 @@ conformance/conformance.pb.h
 conformance/Conformance.pbobjc.h
 conformance/Conformance.pbobjc.m
 conformance/conformance.rb
+conformance/google/
 conformance/javac_middleman
+conformance/lite/
 conformance/protoc_middleman