webos-preferred-versions: Prefer connman 1.4

* prefer 1.4 so that connman-1.12 can be added to meta-webos-backports
  and then enabled together with .bbappend update

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>
Change-Id: I6777ea61a2022fafecbe7e4a6fea34fee13a3549
Reviewed-on: https://g2g.palm.com/1899
Reviewed-by: Martin Jansa <Martin.Jansa@lge.com>
Tested-by: Martin Jansa <Martin.Jansa@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Sapna Todwal <sapna.todwal@lge.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>