tasks #7082: Index custom date metadata (second part)

 * Remove metadata_factory from actions

Change-Id: I40671f7ea5b254810b7de33364c1a045aeac732e
Merge commit 'refs/changes/64/2664/3' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  tasks #7082: Index custom date metadata (second part)

Change-Id: Ia0651cb6b58ba71bdb745e2f873554131c47098a
This is Tuleap 7.1.99.47

Change-Id: I087cf64e0cd9859ad50250a12663adeea3405bf5