Change MavenITmng1830ShowVersionTest to account for SHA1 as version

Buid from Git we now have output like the following given mvn -v:

Apache Maven 3.1-SNAPSHOT (d6544c4814a91c15d67a05d60e18f91a72fc57a9; 2012-12-08 14:09:52-0500)

So we need add a regex to look for that in the test.