CSPL-570 Documentation for configuring indexer clusters and standalones with LM

[akondur]

The JIRA CSPL-570 points out that the License Master(LM) logs are not forwarded to the Cluster Master(CM) which is configured as a license slave. The reason for this is that the LM has not setup the outputs.conf to send to the CM via indexer discovery. To enable the same on the LM, we need to introduce the clusterMasterRef in the LM Spec as show in the example below:

apiVersion: enterprise.splunk.com/v1beta1
kind: LicenseMaster
metadata:
  name: example
  finalizers:
  - enterprise.splunk.com/delete-pvc
spec:
  clusterMasterRef:
    name: example
  volumes:
    - name: licenses
      configMap:
        name: splunk-licenses
  licenseUrl: /mnt/licenses/enterprise.lic

The operator uses the clusterMasterRef to introduce the env variable SPLUNK_CLUSTER_MASTER_URL which is picked up ansible to setup indexer discovery on outputs.conf.

This PR edits the documentation with regards to connecting IndexerClusters and Standalones to LicenseMaster.

[smohan-splunk]

This section seems incomplete? Is it needed?

[smohan-splunk]

Is this section necessary?