Extend test case to cover old alarm style conversion

There is a related change https://review.openstack.org/#/c/74462/
that fixs bug #1281181. This change extends an existing test case to run
on db2 enigne to cover that bug

Change-Id: Ib6894c774ec3fe322a2b8a75cc036cedcee5ce43
Ensure insecure config option propagated by alarm service

Fixes bug 1292130

Ensure insecure (i.e. non-cert-verifying) access over SSL to
keystone works from the alarm evaluator

Change-Id: Ice009ad97ea540afede697e9d812f1bde877dd84
Merge "Ensure insecure config option propagated by alarm service"
Merge "Extend test case to cover old alarm style conversion"