CFE-1038: update command-line argument name for RouteExternalCertificate feature-gate

[chiragkyal]

Update command-line argument name to ROUTER_ENABLE_EXTERNAL_CERTIFICATE for RouteExternalCertificate feature-gate

As per openshift/cluster-ingress-operator#1017 (comment), we're using ROUTER_ENABLE_EXTERNAL_CERTIFICATE env var, instead of ROUTER_EXTERNAL_CERTIFICATE to propagate the Tech-Preview feature gate information down to router from cluster-ingress-operator.

https://issues.redhat.com/browse/CFE-1038

[openshift-ci-robot]

@chiragkyal: This pull request references CFE-1038 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target the "4.16.0" version, but no target version was set.

Details

In response to this:

Update command-line argument name to ROUTER_ENABLE_EXTERNAL_CERTIFICATE for RouteExternalCertificate feature-gate

As per openshift/cluster-ingress-operator#1017 (comment), we're using ROUTER_ENABLE_EXTERNAL_CERTIFICATE env var, instead of ROUTER_EXTERNAL_CERTIFICATE to propagate the Tech-Preview feature gate information down to router from cluster-ingress-operator.

https://issues.redhat.com/browse/CFE-1038

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[chiragkyal]

/assign @alebedev87

[alebedev87]

/lgtm
/approve

[openshift-ci]

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alebedev87

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

The pull request process is described here

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Needs approval from an approver in each of these files:

• enhancements/ingress/OWNERS [alebedev87]

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

[openshift-ci]

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