Release private network index on stop - EUCA-9227

EUCA-9227
Remove unused security token functionality - EUCA-9247

EUCA-9247
Set permissions on request log file - EUCA-9235

EUCA-9235
Map DNS service IPs to listener interface - EUCA-9249

The IPs returned for A and NS queries for nameservers are now mapped to
the host addresses corresponding to the listener interface.

EUCA-9249
Merge remote-tracking branch 'origin/dev/sjones/EUCA-9227' into testing
Merge remote-tracking branch 'origin/dev/sjones/EUCA-9235' into testing
Merge remote-tracking branch 'origin/dev/sjones/EUCA-9247' into testing
Merge remote-tracking branch 'origin/dev/sjones/EUCA-9249' into testing