stream-requirements: smoother matching in test-ssh-proto.t
The value of `streamreqs` changes depending of the format used, but this is not
relevant for this tests. So we doing a smarter matching of the line to avoid
this test interfering with format changes in the future.
Differential Revision: https://phab.mercurial-scm.org/D12080
<item>
<title>{branch|escape}</title>
<link>{urlbase}{url|urlescape}rev/{node|short}</link>
<description><![CDATA[{branch|strip|escape|addbreaks}]]></description>
<pubDate>{date|rfc822date}</pubDate>
</item>