ISPN-3480 Use protoparser lib instead of relying on binary descriptors g...

...enerated by protoc

https://issues.jboss.org/browse/ISPN-3480


Peaked at the StringListAttributeDefinition and it does it via comma.  I haven't had a .proto file with a comma in there, but is it valid to do so (I didn't find an example on protobuf page)?  If so then there is no way to import that file properly.  @anistor or @gustavonalle do you guys know?