Add new attributes for common rpc configuration

We need provide ability to configure the following rpc related
attributes:
rpc_thread_pool_size
rpc_conn_pool_size
rpc_response_timeout
There is the similar changes on cinder:
https://review.openstack.org/#/c/58189/

Change-Id: I93765f798b4c74727b8e4e962749e37468080c35
Setting the libvirt_cpu_mode is none when libvirt_type is qemu

When setting libvirt_type is qemu the libvirt_cpu_mode should be set to
'none'.

Closes-bug: #1254981

Change-Id: I5e00751d25f1b4804367a1f338730174dc46aa97
Relax the dependency on openstack-identity to the 7.x series

openstack-identity is now on 7.2.0, which doesn't get picked up because of the
strict dependency of the 7.0.x series.

Change-Id: I1d505f917b6b957ec5a9b1485a5ab2868535346e
Fixing console auth service and process names for RHEL.

vncproxy_console_auth process and service names are incorrect
for RHEL. Also, added vncproxy_console_packages, process and
service name.

Change-Id: Ib040a30c3e8d163f8e2995a38d08aebbf301582a
Closes-bug: #1256456
Make the following attributes are configurable in chef attribute.

auto_assign_floating_ip
disk_allocation_ratio
allow_resize_to_same_host
force_dhcp_release


Change-Id: I434fc5f77cdb800f17eb9e240263b2643717e7a0
Adding neutron support in openstack-compute

Adding neutron support. It is a search and replace of
quantum with neutron in all the files. Also, set 8.0.0
as the version in metadata.rb. The version was not bumped
when stable/grizzly was branched. Also, updated the
dependency cookbook versions in metadata.rb.

Change-Id: Ia53ffcb0a6fbf322784fb6409adc5386b3e7dd40
Implemented: blueprint neutron-support