Reduce the polling interval in getService() to 100ms

The 1 second polling interval is too long and 100ms interval can reduce
the boot time, especially for ARC++. The test results can be found in
b/30892329.

This CL also adds some ALOGs to show the service start failure as well
as to avoid spam.

Bug: 38432898
Test: Services can still start. Test cheets_PerfBootServer for ARC++.
Change-Id: I9c0da9ef8a18a0e1432c39d98a34377bb66c5d85