Fixed ZEN-9169
Merge pull request #22 from ssirushchyshyn/develop

ZEN-9169
ZEN-8975: remove zDBINstancesPassword property when installing new ZP version
Merge remote-tracking branch 'upstream/develop' into develop
Merge remote-tracking branch 'zenoss/develop' into develop
Merge pull request #23 from ssirushchyshyn/develop

ZEN-8975: fix for zDBINstancesPassword
Merge pull request #138 from ssvsergeyev/develop

Fixes for 9169, 8975