Set default timeout for deleting many refs
Set default timeout for deleting many refs

Prior to this change, this RPC had a fast_timeout. This timeout doesn't
set no timeout on Sidekiq. Deleting many refs can take over a couple of
seconds, so a default timeout would be neccesairy.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/49862

iiet/iiet-git,stoplightio/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,axilleas/gitlabhq,axilleas/gitlabhq,jirutka/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,iiet/iiet-git,dreampet/gitlab,jirutka/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,stoplightio/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,mmkassem/gitlabhq,iiet/iiet-git,axilleas/gitlabhq