Call rx_SetNoJumbo earlier

Call rx_SetNoJumbo earlier

For ubik server processes, rx_SetNoJumbo needs to be called before
ubik initialization for it to effect the communication between
dbservers; otherwise, full database transfers may result in Rx
jumbograms on the wire regardless of the jumbo/nojumbo setting. Move
the call to rx_SetNoJumbo to before ubik initialization to avoid this.

Also move the call to rx_SetNoJumbo to immediately after rx_Init* for
all server processes, for consistency. Move similar calls to
rx_SetMaxMTU for the same reason.

Change-Id: Ic79415829601fcfb4e74e72fbf5711d0c32aaa0c
Reviewed-on: http://gerrit.openafs.org/7350
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Simon Wilkinson <simonxwilkinson@gmail.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>