Leave default_mpm mode for some services

This commit partially reverts I027ffc35c5a09081a8bd565067cdea234e054666
and set back default_mpm to default value to avoid issues with
Apache update during upgrade/update procedures as changing
mpm mode requires exaclty service restart instead of reload, which
leads to failed service run.

Change-Id: I427de68e2cf4609d2af39a4ae97dcb05b02345bd
Related-Prod: PROD-33599
4 files changed