don't to php tests against master, because we currently have to test against new versions manually. Add BRANCH stable9 to testing matrix, also php7.
don't to php tests against master, because we currently have to test against new versions manually. Add BRANCH stable9 to testing matrix, also php7.

EUDAT-B2DROP/b2sharebridge,EUDAT-B2DROP/b2sharebridge,EUDAT-B2DROP/b2share-bridge,EUDAT-B2DROP/b2share-bridge