Make servicemanager ProcessCapacityHigh

Change servicemanager's task profile to ProcessCapacityHigh in order
to measure the impact on startup latency.

Lab tests shows that this change reduces app startup time.

Bug: 314150094
Test: Run v2/mpts/health/mpts/heavyweight-memhog
Change-Id: I46a40f44139f5e6e3eda0138c54fc4361ad9c8eb