[v30r0] update base
BEGINRELEASENOTES
*Core
CHANGE: Update base to Dirac v7r0p50, DiracOS v1r15 used for that release
ENDRELEASENOTES
Drop SL6 testing
Edited by Andre Sailer
BEGINRELEASENOTES
*Core
CHANGE: Update base to Dirac v7r0p50, DiracOS v1r15 used for that release
ENDRELEASENOTES
Drop SL6 testing