CBLT-202:  cd to correct dir to try maven upload

Change-Id: I524731f0a6e30fd38ab5f4d0872b75e811b1ae8f
Reviewed-on: http://review.couchbase.org/34714
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>