Fix JRuby + MySQL by locking to jdbc-mysql for CI.
Fix JRuby + MySQL by locking to jdbc-mysql for CI.

mabras/refinerycms,hoopla-software/refinerycms,LytayTOUCH/refinerycms,mkaplan9/refinerycms,bricesanchez/refinerycms,LytayTOUCH/refinerycms,bricesanchez/refinerycms,trevornez/refinerycms,aguzubiaga/refinerycms,chrise86/refinerycms,hoopla-software/refinerycms,trevornez/refinerycms,chrise86/refinerycms,Eric-Guo/refinerycms,bryanmtl/g-refinerycms,johanb/refinerycms,mobilityhouse/refinerycms,trevornez/refinerycms,anitagraham/refinerycms,kappiah/refinerycms,kelkoo-services/refinerycms,LytayTOUCH/refinerycms,refinery/refinerycms,aguzubiaga/refinerycms,aguzubiaga/refinerycms,KingLemuel/refinerycms,johanb/refinerycms,hoopla-software/refinerycms,stefanspicer/refinerycms,mlinfoot/refinerycms,louim/refinerycms,mabras/refinerycms,simi/refinerycms,kappiah/refinerycms,chrise86/refinerycms,Eric-Guo/refinerycms,mobilityhouse/refinerycms,Retimont/refinerycms,Eric-Guo/refinerycms,bryanmtl/g-refinerycms,stefanspicer/refinerycms,simi/refinerycms,anitagraham/refinerycms,gwagener/refinerycms,KingLemuel/refinerycms,simi/refinerycms,mlinfoot/refinerycms,Retimont/refinerycms,johanb/refinerycms,sideci-sample/sideci-sample-refinerycms,kappiah/refinerycms,mkaplan9/refinerycms,anitagraham/refinerycms,mabras/refinerycms,louim/refinerycms,refinery/refinerycms,KingLemuel/refinerycms,gwagener/refinerycms,kelkoo-services/refinerycms,stefanspicer/refinerycms,sideci-sample/sideci-sample-refinerycms,Retimont/refinerycms,mlinfoot/refinerycms,gwagener/refinerycms,mkaplan9/refinerycms,simi/refinerycms,refinery/refinerycms