We're still seeing a lot of timeouts waiting for instances to become
active in this provider, and are observing fairly long delays
between API calls at times. Increase the launch wait from 10 to 15
minutes, and increase the minimum delay between API calls by an
order of magnitude from 0.001 to 0.01 seconds.
Change-Id: Ib13ff03629481009a838a581d98d50accbf81de2