packaging: update version of postgresql driver

For some reason the 9.1-901.jdbc4 downloads 9.0 driver, may be a
problem in maven mirrors, as download directly from search downloads
currect version.

9.1-901-1.jdbc4 works correctly.

Change-Id: I57fab39530805a0c9770b22b423162027631ccb8
Bug-Url: https://bugzilla.redhat.com/923260
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
(cherry picked from commit f091b095c4ab37345bb677a0b47e5832540054b9)