Resolve LHCBPS-1783 "Backport Git CondDB"

Marco Clemencicrequested to merge
LHCBPS-1783.backport-Git-CondDB.hlt2011 into hlt2011-patches

Backport of !557 (merged) and following changes.

Closes LHCBPS-1783

Edited by Marco Clemencic

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