Add support to update serverImage of a same server version

[CosmicSaaurabh]

Add support to update serverImage of a same server version.

Need to add an Internal support api - /internal/support/clusters/{cluster_id}, which returns server image of current cluster and check if image passed in def file is different from current image and update accordingly.

Need to support bearer token in init command, will have to check if override token and bearer token are same?