certgen job name does not get truncated to 63 characters, failing when using long image tags

[javsalgar]

What steps did you take and what happened:

• Deploy contour-operator using an image with a long tag. Example: d76d8b5da2ab549cee82cd99fcf8d747dba564863ccc459cae5a91f50bf9c5d3
• Deploy a contour object

The contour instance will not get deployed because the certgen job will not be created:

         1.6551249492126336e+09 ERROR   controller.contour_controller   Reconciler error    {"name": "contour-sample", "namespace": "srdicontou", "error": "failed to ensure job for contour srdicontou/contour-sample: failed to create job srdicontou/contour-certgen-d76d8b5da2ab549cee82cd99fcf8d747dba564863ccc459cae5a91f50bf9c5d3: Job.batch \"contour-certgen-d76d8b5da2ab549cee82cd99fcf8d747dba564863ccc459cae5a91f50bf9c5d3\" is invalid: spec.template.labels: Invalid value: \"contour-certgen-d76d8b5da2ab549cee82cd99fcf8d747dba564863ccc459cae5a91f50bf9c5d3\": must be no more than 63 characters", "errorCauses": [{"error": "failed to ensure job for contour srdicontou/contour-sample: failed to create job srdicontou/contour-certgen-d76d8b5da2ab549cee82cd99fcf8d747dba564863ccc459cae5a91f50bf9c5d3: Job.batch \"contour-certgen-d76d8b5da2ab549cee82cd99fcf8d747dba564863ccc459cae5a91f50bf9c5d3\" is invalid: spec.template.labels: Invalid value: \"contour-certgen-d76d8b5da2ab549cee82cd99fcf8d747dba564863ccc459cae5a91f50bf9c5d3\": must be no more than 63 characters"}]}

What did you expect to happen:

The job name is truncated to 63 characters so it passes the k8s validations.

Anything else you would like to add: [Miscellaneous information that will assist in solving the issue.]

Environment:

• Software version:
• Kubernetes version: (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):