Add create/delete of clover-system services from CLI

Add create/delete of clover-system services from CLI

- Improve usability when deploying or deleting various
Clover components using cloverctl
- Add yaml for each of the clover-system services
including controller, collector, spark, redis, cassandra,
clovisor and jmeter separated by k8s resource and available
under a single yaml directory
- Deploy/delete yaml for services in various subsets including:
  - visibility(controller, collector, spark, redis, cassandra)
  - datastore(redis, cassandra)
  - validation(jmeter master/slaves(4))
  - clovisor (individually)
  - collector (individually)
  - controller (individually)
Ex.  cloverctl create system controller
Ex.  cloverctl create system visibility
- Ability to add nodeport for controller separately
(cloverctl create system controller nodeport)
- Use native client-go methods to create/delete all k8s resources
used by Clover including:
  - pods, deployments, statefulsets, daemonsets, services
  - serviceaccounts, clusterrolebindings
- Above allows yaml override of values such as image value specified
in deployment or daemonset. This is broken down by:
- tag (ex. latest, opnfv-7.0.0) or repo'(ex. opnfv, localhost:5000)
that can be added with CLI flags as shown below:
(cloverctl create system visibility -t latest -r localhost:5000)
  - defaults to -r opnfv -t latest
- Creates/deletes clover-system namespace

- Also added ability to create/delete lb service for controller
external access when running on environment such as GKE
(cloverctl <create/delete> system controller lb)

Change-Id: I2a3c6c80035d4663fa38368b3ff13e9a14090a47
Signed-off-by: earrage <eddie.arrage@huawei.com>