Configure glance CA certificate path in cinder

A new configuration option is available in cinder for setting
the CA path. Configure this option in devstack when native SSL
or TLS proxy is configured.

Change-Id: I2cf9a3b8ba8e4896bd98efe0fb6f7d62fb279d90
Closes-Bug: 1384267
Fix a minor comments

A minor mismatch in lib/neutron since now unstack.sh invokes
three functions and also start_neutron_agents() is called before
create_neutron_initial_network().

Change-Id: Ibbe68501cce4c062a9ac610cbc44188dc9bab6c8
Desupport neutron openvswitch and linuxbridge monolithic plugins

These plugins were removed in Juno.
Note: this doesn't affect the corresponding ML2 mechanism drivers.

Partial-Bug: #1323729
Change-Id: Ia8da1e20a03fef5657ba1584bf83ddd224b5d5f2
correct templated catalog driver class

Now the templated catalog driver class "TemplatedCatalog" is removed
in this patch https://review.openstack.org/#/c/125708/2 use
"keystone.catalog.backends.templated.Catalog" instead.

Change-Id: Ib9c8ea557e7171ff0c78a1e10d752ed564aff9e7
Closes-Bug: #1386562
Stop setting deprecated OVS.enable_tunneling option

The option has been deprecated in IceHouse and now being removed.

Related-Bug: #1195374
Change-Id: I38d962551173892144c369df71e0524b43e1fc89
[Sahara] Copy policy.json if it exists

To enable policy check in Sahara we need gate tests passed.
Tests will not pass until Sahara has default policy.json (
e.g. http://logs.openstack.org/09/131609/1/check/check-tempest-dsvm-full/536d5e7/console.html). 
New code will copy of policy.json if it exists.

So, for now this code will do nothing.
Once policy.json appears in etc/sahara, the code will start coping
it to sahara conf dir. This will allow to merge auth support with
gate tests passed.

Related blueprint: auth-policy

Change-Id: I98e108ff02aacb91570f97e457d67dd02779ae3d
Merge "Fix a minor comments"
Merge "XenAPI: Always update proxy settings"
Merge "correct templated catalog driver class"
Merge "Configure glance CA certificate path in cinder"
Merge "XenAPI: move Neutron plugin install to domU"
Merge "XenAPI: Remove non-used functions"
Merge "XenAPI: workaround for unsupp. associative arrays"
Merge "Desupport neutron openvswitch and linuxbridge monolithic plugins"
Merge "Stop setting deprecated OVS.enable_tunneling option"
Merge "[Sahara] Copy policy.json if it exists"