In troubleshooting grenade failures in ironic,
we've observed a sporatic failure causing the
ironic-grenade job to fail upwards of 20-40%
of the time where it seems cirros, due to the
boot sequencing and interfaces, is not
online for networking until after sixty seconds
have passed. In one case 83 seconds before the
networking was fully online.
In consulting with neutron contributors, a random
job check seems to reveal that even with pure VM
workloads, it takes on average 35 seconds into the
ping check. As such, it seems reasonable to make
the setting configurable so ironic-grenade can
execute with an increased timeout more appropriate
to the job settings and test environment.
Adds a INSTANCE_WAIT variable, which defaults to
the prior setting which was static, 60 seconds.
Change-Id: Ie5acf1ad7f8dca39db07f7e61035a8916439004d
d8294440e7