Support master node high availability

Kuryr CNI daemon is scalability improvement that moves watching K8s API
and VIF plugging into a separate entity called kuryr-daemon.
Kuryr-daemon will run in a container and serve requests from
kuryr-driver.

Add readiness probe to kuryr controller pod

This commit relocates filter_plugings to lib_utils,
changes the namespacing to prevent unintended use of
older versions that may be present in filter_plugins/
directory on existing installs.

Add lib_utils to meta depends for roles

Also consolidate some plugins into lib_utils from
various other areas.

Update rpm spec, obsolete plugin rpms.

This commit removes openshift.common.service_type
in favor of openshift_service_type.

This commit also removes r_openshift_excluder_service_type
from plays in favor of using the role's defaults.

Add external_svc_subnet field for k8s loadbalancer type service
in kuryr-kubernetes code support external service subnet
but openshift does not support yet

Signed-off-by: jihoon.o <jihoon.o@samsung.com>

This commits adds a readiness probe to the kuryr controller
when the kuryr ports pool functionality is enabled. This way
the controller will not be set as ready until all the pre-created
ports have been loaded into their respective pools and are ready
to be used by the pods.

This commits enables the ports pool driver when deploying kuryr
networking on top of OpenShift in containers. It also exposes
some configuration options such as the maximum and minimum pool
sizes, as well as the bulk subports creation size and the time
between pools update actions.