Relax rake backup regex to handle CE and EE RCs

The EE RC2 branch was failing due to a regex mismatch with 1494618360_2017_05_12_9.2.0-rc1-ee_gitlab_backup.tar.

See http://rubular.com/r/uTDlT85zW1

added 1 commit

• d36a4097 - Relax rake backup regex to handle CE and EE RCs

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approved this merge request

enabled an automatic merge when the pipeline for d36a4097 succeeds

canceled the automatic merge

Going to merge manually since the static-analysis failure will be fixed by another MR.

merged

mentioned in commit 09ca4c92

mentioned in commit a72ad95e

Picked into 9-2-stable, will go into 9.2.0-rc2.