LU-11483 ldlm ofd_lvbo_init() and mdt_lvbo_fill() create env

LU-11483 ldlm ofd_lvbo_init() and mdt_lvbo_fill() create env

on demand as in very few cases it's called with env undefined.
it would be a very big patch to pass env through all the path
chains..

Change-Id: Ic6819215877891ad95f2937729941453abf981e7
Signed-off-by: Alex Zhuravlev <bzzz@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/33321
Tested-by: Jenkins
Reviewed-by: Patrick Farrell <paf@cray.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>