Add optional ip address filter for hiding ips

Change-Id: I9f7631b9137062913379b45c98c545dda02ce284
Implements: blueprint add-ip-addr-filter-to-instance-view
Replace GUID with generated password

Change-Id: Id17f60db4df7188ec79faddc25453159a4f65fba
Closes-Bug: #1227913
Update tests to work with the latest testtools

Testtools has been updated recently. Unit tests updated
to work with the latest version.

Fixes bug: 1248896

Change-Id: If4d71a394b2f9b7f5f1b612ae19273de7bec54ce
Merge "Replace GUID with generated password"
Merge "Add optional ip address filter for hiding ips"