More neutron configuration updates for Liberty including
some changes for RDO packages.
1) Remove explicit configuration of kernel parameters
because neutron handles them.
2) Explicitly add DNS resolver to virtual networks
because default value prevents name resolution within
instances.
3) Move some configuration options to better locations.
4) RDO: Remove workaround for init scripts.
5) RDO: Explicitly configure lock_path in neutron.conf file.
6) RDO: Install openstack-neutron package on compute nodes
because it also installs packages on which the Linux
bridge agent depends.
Change-Id: I2c70c64e1272ee33eb364c079d8187ade7235ee2
Implements: blueprint installguide-liberty
048ef85d2c