Router: Do not include accept-proxy in port list when using proxy protocol and syn eater

[cldmnky]

When enabling both proxy protocol (ROUTER_USE_PROXY_PROTOCOL) and DROP_SYN_DURING_RESTART, the ports variable in reload-haproxy is set to:

80 accept-proxy,443 accept-proxy

This makes the reload script fail with:

Bad argument `accept-proxy,445'
Try `iptables -h' or 'iptables --help' for more information.

This PR fixes that by adding -o to grep, which makes grep only return the match from the reqex

[openshift-ci-robot]

Hi @cldmnky. Thanks for your PR.

I'm waiting for a openshift member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[rajatchopra]

/lgtm
/approve

[openshift-merge-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: cldmnky, rajatchopra

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

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• images/router/OWNERS [rajatchopra]

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[cldmnky]

@rajatchopra not sure if I should do anything more here? Should I run a retest?

[0xmichalis]

/ok-to-test

[0xmichalis]

/retest

[openshift-bot]

/retest

Please review the full test history for this PR and help us cut down flakes.

[openshift-merge-robot]

Automatic merge from submit-queue (batch tested with PRs 16454, 16444, 16522)