Let offline try to work with already downloaded mvn.
Let offline try to work with already downloaded mvn.

Change-Id: I7d41ef0e1781fc1c1f3b3ca01cf07edf5b3d3639
Reviewed-on: http://review.couchbase.org/17667
Reviewed-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>
Tested-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@couchbase.com>

resrugam/java-memcached-client,dustin/java-memcached-client,Agilefant/spymemcached,douxiaozhao/java-memcached-client,couchbase/spymemcached,dustin/java-memcached-client,douxiaozhao/java-memcached-client,dustin/java-memcached-client,tootedom/spymemcached,Agilefant/spymemcached,HubSpot/java-memcached-client,Agilefant/spymemcached,tootedom/spymemcached-1,couchbase/spymemcached,HubSpot/java-memcached-client,tootedom/spymemcached-1,resrugam/java-memcached-client,douxiaozhao/java-memcached-client,tootedom/spymemcached,tootedom/spymemcached-1,resrugam/java-memcached-client,tootedom/spymemcached,HubSpot/java-memcached-client,couchbase/spymemcached