Add support for special platforms in lcg-dev slots
!355 (merged) introduced support for x86_64+avx2
or x86_64_v3
architectures in lhcb-lcg-dev#
slots and this MR extend the support to allow x86_64_v2-centos7-gcc11+dd4hep-dbg
and similar platforms.
Edited by Marco Clemencic