LU-4194 ldlm: set l_lvb_type coherent when layout is returned

LU-4194 ldlm: set l_lvb_type coherent when layout is returned

In case layout has been packed into server reply when not
requested, lock l_lvb_type must be set accordingly.

Signed-off-by: Bruno Faccini <bruno.faccini@intel.com>
Change-Id: Iaf54c9ba27785e529f4f2fb967d2fad4fc1dfbcb
Reviewed-on: http://review.whamcloud.com/8270
Tested-by: Jenkins
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Johann Lombardi <johann.lombardi@intel.com>