Add IgnoreAttemptedHostsFilter to oslo

IgnoreAttemptedHostsFilter is RetryFilter that is using in nova and
cinder, so we can put it to oslo and then back port it to both nova
and cinder.

Change-Id: Ia355810b106fee14a55f48081301a310979befac
Implements part of bp oslo-more-filters
Merge "Add IgnoreAttemptedHostsFilter to oslo"