Update register.go to fully qualify namespaces (#147)
Update register.go to fully qualify namespaces (#147)

The packageName function now returns a fully-qualified prefix. When generating C++ names, full namespace qualification will avoid ambiguity in namespace resolution.
envoyproxy/protoc-gen-validate,envoyproxy/protoc-gen-validate,envoyproxy/protoc-gen-validate,envoyproxy/protoc-gen-validate,envoyproxy/protoc-gen-validate