Fix extra comma in kustomize operator configmap

[ukclivecox]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #3652

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[ukclivecox]

/test integration

[seldondev]

@cliveseldon: The following test failed, say /retest to rerun them all:

Test name	Commit	Details	Rerun command
integration	fc4fb80	link	/test integration

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the jenkins-x/lighthouse repository. I understand the commands that are listed here.

[axsaucedo]

Looks good - tested locally (seems no difference on the helm charts) and all integration tests pass so should be good to merge
/approve

[seldondev]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: axsaucedo

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [axsaucedo]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment