Change tenant network type usage for IB Fabric

This patch changes tenant network type usage for InfiniBand Fabric
to vlan type. Add the indication of Fabric Type (Ethernet/InfiniBand)
to the provider_network via the plugin configuration file.
If physical network type is not specified for some provider network
listed in the network_vlan_ranges, use default physical network type.

Co-authored-by: Roey Chen <roeyc@mellanox.com>
Change-Id: Id45acfb8234359a43303c2eee2205a44998c039a
Closes-Bug: 1263638
Include proper Content-Type in the HTTP response headers

Neutron namespace proxy handler and metadata agent were not setting the
Content-Type in its response. Both of them were returning only the response
data which is obtained from the nova-metadata-service. Since they were returning
only the response data, the Content-Type returned to the clients has the default
one which is - "text/html". Ideally this should be set to the data type which is
present in the HTTP Response. The fix now includes the Content-Type which is
returned by nova-metadata-service

Closes-Bug: #1243878
Change-Id: If68f0b508fbea4ecd1eb0e58d602b5ba6ccbe263
Openvswitch update_port should return updated port info

Found when I enabled test_extension_allowedaddress_pairs, where
test_create_port_removed_allowed_address_pairs would fail due to the
returned port still containing the original addresspair.  The cause is
ovs simply not updating the port info being returned.

This patch additionally enables test_extension_allowedaddress_pairs for
openvswitch.

Moved checks and updating into method similar to what we do for
extradhcpopts and security_groups.

Additionally, this required fixing is_address_pairs_attribute_updated() as
it was passing (non-hashable) dicts to utils.compare_elements.

Change-Id: Ic871fea68fb9fcc862b1fd5ae5fe7aec540e4a30
Partial-Bug: #1255150
BigSwitch: Asynchronous rest calls for port create

Makes rest calls for port creation an async
operation so create_port calls immediately
return in a BUILD state.

Implements: blueprint bsn-port-async
Change-Id: Ib512a846fa878ec33205df08a3b2464b7ea0941a
Finish off rebranding of the Nicira NVP plugin

Old names are kept for backward compatibility.

Last references to the old NVP plugins are going
to be dropped in Juno.

Completes blueprint nicira-plugin-renaming

Change-Id: Ia1aa4f658891e7ce9469748432c338353195edfd
Imported Translations from Transifex

Change-Id: Ie3ccabd213f1ff460585ae05beef6e4df9c46c38
Merge "Finish off rebranding of the Nicira NVP plugin"
Merge "Include proper Content-Type in the HTTP response headers"
Merge "Imported Translations from Transifex"
Merge "BigSwitch: Asynchronous rest calls for port create"
Merge "Change tenant network type usage for IB Fabric"
Merge "Openvswitch update_port should return updated port info"