Addition of new config items causing CTS failures

When new config items are added in between exiting ones
it is causing CTS failures with resource id mismatch.
Fix: Move the newly added config items to the bottom
of config.xml file, in order to Pass CTS.

Change-Id: I0b0c54a2b18ae220e59aa8df0e8644441aae0206
CRs-Fixed: 636381
Tunning max allowed background services

The serialize running of background services feature
delay some services startup when system bootup, and
lead some abnormal behaivor at the early of system startup.
Tunning will be disabled after system complete bootup.

Change-Id: I834607d9156253bee13848586a8136e24760fdf4