EX-8927 csdc: check ocd flag for fiemap/lseek

EX-8927 csdc: check ocd flag for fiemap/lseek

Currently client will not sending fiemap/lseek request to OST if
the file is a compressed one. This patch will check the
OBD_CONNECT2_COMPRESS flags and send the request if OST supports
compression as server would do the fiemap/lseek check instead.

Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: I478cbf161044165fa31d4caa2336e9949fc626fe
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/53935
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>