CORENET-6097: Open BGP port 179 for no-overlay mode

[zhaozhanqi]

Add firewall rule to open port 179/tcp in the libvirt zone during host configuration. This port is required for BGP routing when no-overlay mode is enabled for the default network.

[openshift-ci]

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[openshift-ci]

Hi @zhaozhanqi. Thanks for your PR.

I'm waiting for a openshift-metal3 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.

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[zhaozhanqi]

@mkowalski Hi, could you help take a look this? we need this patch to setup no-overlay cluster in our CI. thanks.

[zhaozhanqi]

@bfournie @sadasu Would you like to help review this? thanks