Prepare for the rename of DataObjectHandleBase to DataHandle

This is a backward compatible change in preparation for gaudi/Gaudi!1091 (merged).

See also !2653 (merged) (master MR)

added Configuration all-slots modernisation labels

mentioned in merge request !2653 (merged)

assigned to @mstahl

• [2020-08-04 00:06] Validation started with lhcb-run2-patches-dev4#410
• [2020-08-04 00:12] Validation started with lhcb-run2-patches#777
• [2020-08-05 00:09] Validation started with lhcb-run2-patches-dev4#411
• [2020-08-05 00:15] Validation started with lhcb-run2-patches#778

unassigned @mstahl

added 1 commit

• 099840e7 - Prepare for the rename of DataObjectHandleBase to DataHandle

Compare with previous version

I fixed one remaining failing test, let's see tomorrow

assigned to @rmatev

approved this merge request

@cattanem this is ready

assigned to @cattanem and unassigned @rmatev

removed all-slots label

merged

mentioned in commit 69481c27

mentioned in merge request !2799 (merged)