Ignore case difference for host name when X_CSI_IG_MODIFY_HOSTNAME is enabled

[santhoshatdell]

Description

Ignored case difference for host name when X_CSI_IG_MODIFY_HOSTNAME is enabled. So, existing host with different case will be considered instead of modifying it which fails.

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#1650

Checklist:

• Have you run format,vet & lint checks against your submission?
• Have you made sure that the code compiles?
• Did you run the unit tests successfully?
• Have you maintained at least 90% code coverage?
• Have you commented your code, particularly in hard-to-understand areas
• Have you done corresponding changes to the documentation
• Did you run tests in a real Kubernetes cluster?
• Backward compatibility is not broken

How Has This Been Tested?

The issue was reproduced on my setup and the node pod crashed.
Then with the fix on the same setup, the node pod didn't crash.

time="2024-12-19T21:49:29Z" level=info msg="**************************nodeHostSetup executing...*******************************"
time="2024-12-19T21:49:29Z" level=info msg="Waiting for 10 seconds"
time="2024-12-19T21:49:39Z" level=info msg="valid FC initiators: []"
time="2024-12-19T21:49:39Z" level=info msg="No existing NVMe hosts; new hosts will be created for all discovered initiators"
time="2024-12-19T21:49:39Z" level=info msg="valid NVMeTCP initiators: []"
time="2024-12-19T21:49:39Z" level=info msg="Checking initiator OR-1C:000:iqn.1994-05.com.redhat:00001 against host csi-node-SL-worker-1-0bx8wdgbjidld"
time="2024-12-19T21:49:39Z" level=info msg="Valid initiator: OR-1C:000:iqn.1994-05.com.redhat:00001"
time="2024-12-19T21:49:39Z" level=info msg="valid (existing) iSCSI initiators (must be manually created): [iqn.1994-05.com.redhat:00001]"
time="2024-12-19T21:49:39Z" level=info msg="ISCSI Daemon is active"
time="2024-12-19T21:49:39Z" level=info msg="setting up array 000000000001 for Iscsi, host name: csi-node-SL-worker-1-0bx8wdgbjidld masking view ID: csi-mv-SL-worker-1-0bx8wdgbjidld"
time="2024-12-19T21:49:39Z" level=debug msg="Processing Iscsi Host array: 000000000001, nodeName: csi-node-SL-worker-1-0bx8wdgbjidld, initiators: [iqn.1994-05.com.redhat:00001]"
time="2024-12-19T21:49:39Z" level=info msg="GetHostById returned: &{csi-node-sl-WORKER-1-0bx8wdgbjidld 0 1 0 false false   iSCSI [iqn.1994-05.com.redhat:00001] [] [] 0 0}, <nil>" 

Able to provision with that worker node, no issues observed.

cert-csi basic test suites have passed. Output attached to ticket KRV-30759.

[jooseppi-luna]

lgtm