Revert "Raise number of nailgun uWSGI workers and sockets"

This reverts commit 39dd5e2bd811bbcc472d48890f9e3c5ae499cc64.
Closes-Bug: 1393049
Change-Id: Ib52af8ba3e7cb22daf5f8dc59af4e38863e64cf7
Merge "Revert "Raise number of nailgun uWSGI workers and sockets""