[PRD-2545] fix missed ovs-agent ocf script
Merge pull request #772 from Mirantis/prd2545

[PRD-2545] fix missed ovs-agent ocf script
Wait for API availability on each call to Neutron or Keystone API

BUG:1246795
+ remove check/wait API availability
+ chanre retries to timeout wait
+ default timeout set as 120sec.
Check API availability in prefetch
Merge pull request #774 from xenolog/bug/1246795

FIX: temporary unavailability Neutron API
tuples has no .append method
Merge pull request #780 from xenolog/PRD-2549

tuples has no .append method
disable firewall in nova, if enabled Neutron and his firewall
Merge pull request #781 from xenolog/PRD-2509

disable firewall in nova, if enabled Neutron and his firewall
Update keystone connection wrapper

Closes-bug: 1248166
Merge pull request #786 from Mirantis/bug1248166

Update keystone connection wrapper
Fix nova-network dns nameservers assignment

Closes-bug: 1248172
Merge pull request #789 from aglarendil/havana

Fix nova-network dns nameservers assignment
partial revert of 8db6b816 and 946d5348
Merge pull request #792 from xdel/fix-crappy-hack

partial revert of 8db6b816 and 946d5348