This patch does the following:
* Reduces interval between checks when waiting on
amphora status in a devstack environment. At the same time we
increase the number of retries so we are effectively waiting
the same total time before a timeout error occurs.
* Disables DNS resolution on the amphora image. Amphorae don't
need to do any DNS resolution anyway since any outbound
connections are done specifying IP addresses. This means
that the amphora never waits for DNS timeouts to occur
when booting and performing other tasks when operating in an
environment where DNS resolution doesn't work (ie. devstack)
In preliminary tests, the above optimizations seem to shave
about 50-55 seconds off per test. (This is mostly due to the
elimination of DNS timeouts.)
Change-Id: Icc7d8e0ac18a4a18ed9eb0950081ddd198cf4684
ea6fb75cda