Update in CHAP creds handling

[sijeesh]

Store CHAP username and password in a secret and pass the secret name and namespace through storage class

[sijeesh]

It passes CSI e2e tests, both with and without CHAP details.

However, if the CHAP credential is changed, the new credentail is leaked on the controller driver:

time="2024-04-23T00:50:20Z" level=error msg="Error controller publishing volume pvc-be32e35c-91b9-4495-9cc5-fde775da295d, err: rpc error: code = Internal desc = Failed to add ACL to volume pvc-be32e35c-91b9-4495-9cc5-fde775da295d for node &{ thirty-cpu1 e6d03e85-3685-179a-6837-6c62fcd100ed [0xc00091c2c0] [0xc00091c380 0xc00091c390 0xc00091c3a0 0xc00091c3b0] [] holler 1234567890abcdef} via CSP, err: Request failed with status code 404 and errors Error code (Not Found) and message (HTTP error response from backend {\"code\":17,\"desc\":\"host does not exist\"})" file="controller_server.go:729"
time="2024-04-23T00:50:20Z" level=error msg="GRPC error: rpc error: code = Internal desc = Failed to add ACL to volume pvc-be32e35c-91b9-4495-9cc5-fde775da295d for node &{ thirty-cpu1 e6d03e85-3685-179a-6837-6c62fcd100ed [0xc00091c2c0] [0xc00091c380 0xc00091c390 0xc00091c3a0 0xc00091c3b0] [] holler 1234567890abcdef} via CSP, err: Request failed with status code 404 and errors Error code (Not Found) and message (HTTP error response from backend {\"code\":17,\"desc\":\"host does not exist\"})" file="utils.go:73"

The username is "holler" and password "1234567890abcdef" in this example.

Thanks for checking this, updated the logs to avoid logging full data of the node.