Change default monitoring port

[ericvn]

Documentation updates that coincide with istio/istio#11421 which changed the default monitoring port from 9093 to 15014.

WIP until that PR is merged.

[istio-testing]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[istio-testing]

Hi @ericvn. Thanks for your PR.

I'm waiting for a istio 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.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[GregHanson]

/ok-to-test

[ericvn]

/assign @rcaballeromx

[rcaballeromx]

@geeknoid Should we update the ports on the HTML of the reference guide or should the update take place in the code?

[rcaballeromx]

/hold

[geeknoid]

All the changes in docs/reference should be removed from this PR. The changes need to happen in the source code and they'll be reflected in the doc repo next time I run the grabReferenceDocs script.

[ericvn]

Per @geeknoid I removed the docs/reference file changes from this PR - Done

[ericvn]

Removed the [WIP] since the underlying istio/istio#11421 was merged.