Default LeaderElectionID is invalid

[goyalankit]

The default leader election ID has an invalid format. If one enables leader election through leader-elect=true, the operator fails to start with the following error:

Example:

> go run ./cmd/training-operator.v1/main.go -leader-elect=true --namespace kubeflow
1.6589798403535447e+09  INFO    controller-runtime.metrics      Metrics server is starting to listen    {"addr": ":8080"}
1.6589798403555276e+09  INFO    setup   starting manager
1.6589798403558226e+09  INFO    Starting server {"path": "/metrics", "kind": "metrics", "addr": "[::]:8080"}
1.6589798403558557e+09  INFO    Starting server {"kind": "health probe", "addr": "[::]:8081"}
I0727 20:44:00.356108 1889297 leaderelection.go:248] attempting to acquire leader lease kubeflow/1ca428e5....
E0727 20:44:00.360526 1889297 leaderelection.go:334] error initially creating leader election record: Lease.coordination.k8s.io "1ca428e5." is invalid: metadata.name: Invalid value: "1ca428e5.": a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')
E0727 20:44:04.107669 1889297 leaderelection.go:334] error initially creating leader election record: Lease.coordination.k8s.io "1ca428e5." is invalid: metadata.name: Invalid value: "1ca428e5.": a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')

Fails to acquire lease:

E0727 20:44:04.107669 1889297 leaderelection.go:334] error initially creating leader election record: Lease.coordination.k8s.io "1ca428e5." is invalid: metadata.name: Invalid value: "1ca428e5.": a lowercase RFC 1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is '[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*')