Feature: Support command to upgrade Jiva Volumes

[kmova]

Once OpenEBS control plane is upgraded to latest version, user/admin will have to initiate the upgrade of the jiva volumes by creating a Kubernetes Job YAML. This is a request to automate the steps by doing the following:

• #83
• #82
• Enhance the Jiva Volume Describe command to auto-determine the openebs namespace where jiva volume-related artifacts are deployed.
• Add support for a new command - openebs upgrade volume [--cas-type=jiva] [<volume-name(s)>] that will perform the following:
  • Check if the jiva volume is running a version older than the jiva operator version
  • If yes and then check if there is already an upgrade job in progress. If yes, then show the status of the upgrade process.
  • If specific volume name(s) is specified, verify it can be upgraded and launch the Upgrade Job
  • If cas-type=jiva is specified, get list of all jiva volumes and launch the Upgrade Jobs for the volumes that need to be upgraded.
  • once the upgrade job is launched, show the status of the upgrade. the command can be exited with user can come back and run the same command to check the status.

The upgrade job yaml format is at: https://github.com/openebs/upgrade/blob/master/docs/upgrade.md#running-the-upgrade-job-2

Related: #43

Notes:

• The command should be introduced in such a way that it can be extended to other engines as well.