CBLT-252:  UNDO change to git submodule command, now back to:

    git submodule init
    git submodule update

This revision should be identical to:

    2633b6a771294364446dd87521663dd2289a2cf9

Change-Id: I1e3ce5f9d644fa85a7c38e4a8a8cfd0f1fc03e55
Reviewed-on: http://review.couchbase.org/35157
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>