Reduce logging output from non-Ironic libraries

The service logs (especially for conductor), are littered with
debug output from other libraries when run with DEBUG verbosity.
This makes it extremely difficult to read the logs. This turns
off the noisiest offenders.

Change-Id: Id779506a7bebe7c7a13fadaeac34807050d1ce04
Change admin_url help in ironic driver

Replace ironic driver's admin_url ('Ironic pulic api endpoint')
with 'Kestoyne API endpoint.'

Change-Id: I3ac43251efff74001aa0e881c34a0c36eb2968ca
Closes-Bug: #1298077
Merge "Change admin_url help in ironic driver"
Merge "Reduce logging output from non-Ironic libraries"