Install and Uninstall scripts for CSM operator

[panigs7]

Description

This PR includes:

• Install script for CSM operator
• Uninstall script for CSM operator

Note: Will cover the fix for warning message coming while installation of operator in another PR.
"Fixed the warning message and pushed in the PR. Adding the screenshots after the fix below."

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#159

Checklist:

• I have performed a self-review of my own code to ensure there are no formatting, vetting, linting, or security issues
• I have verified that new and existing unit tests pass locally with my changes
• I have not allowed coverage numbers to degenerate
• I have maintained at least 90% code coverage
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have maintained backward compatibility

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration

sh install.sh - installs crd, operator and after successful installation we can see the dell-csm-operator-controller-manager pod up and running.

sh uninstall.sh

Fixed Warning message ( kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply):

[karthikk92]

since log says ""Install/Update CRDs", can we have method name as install_or_update_driver_crd() or install_update_driver_crd()

[panigs7]

done

[bharathsreekanth]

Question : As part of the new CSM operator install are you guys testing or planning to test driver install (I believe PowerScale 2.0 install will work without requiring any changes that Moose team is doing)?

[tdawe]

The commits aren't signed. They'll need to be signed prior to merge.

[rensyct]

This function calls verify.sh which checks for snap CRD and snapshot controller. So change the comment, function name and echo statements accordingly as we are not doing K8s version checks in verify.sh

[panigs7]

Done

[panigs7]

Question : As part of the new CSM operator install are you guys testing or planning to test driver install (I believe PowerScale 2.0 install will work without requiring any changes that Moose team is doing)?

Discussed offline in CSM Operator Sync-up meet. This PR handles only the installation of operator.