[ci] Enables castor repo

continuousintegration/docker/ctafrontend/cc7/etc/yum.repos.d/castor.repo

@@ -2,5 +2,12 @@
 name=CASTOR Repositories in LINUXSOFT
 baseurl=http://linuxsoft.cern.ch/internal/repos/castor7-testing/$basearch/os
 priority=2
+enabled=0
+gpgcheck=0
+
+[castor-dbtools]
+name=Core CASTOR Repository
+baseurl=http://castorrepo.web.cern.ch/castorrepo/castor-repo/qa/cc-7/$basearch
 enabled=1
 gpgcheck=0
+priority=1