Update emysql.
Fixes for cloudi_service_db_mysql. Add CT tests to cloudi_service_db_mysql based on the current cloudi_service_db_pgsql CT tests. Update emysql to the eonblast repository (different native return values, but the old emysql was too broken to fix). Fix for cloudi_service_db_pgsql timeout usage. The service request timeout value will be used instead of the configuration argument timeout value for the semiocast driver (making the configuration argument timeout connection only, for the drivers that support it, i.e., epgsql and wg). Change cloudi_service_db_riak ping to start only after the connection is created to be more accurate. Add ping usage to cloudi_service_db_riak CT test. Reformat cloudi_service_db_riak source code. Add asserts to the cloudi_service_msg_size integration test.