Bug 984811

As is the case with a very old cartridge, if both
OPENSHIFT_POSTGRES_VERSION and OPENSHIFT_POSTGRESQL_VERSION do
not exist in postgresql/env directory, create one with '8.4'.

Hard coding this value should be OK, since 8.4 was the only supported
version of PostgreSQL for the cartridge this condition ever applies.
<broker> re-base the broker URI from /broker => /
<broker> fix tests against broker base URI change
Merge pull request #3092 from BanzaiMan/dev/hasari/bz984811

Merged by openshift-bot
Merge pull request #3085 from sosiouxme/admin-console-broker

Merged by openshift-bot