LU-18813 osd-wbcfs: use common rwsem for osd_object

LU-18813 osd-wbcfs: use common rwsem for osd_object

Use a common read/write semaphore for all osd_object
attributes.

Test-Parameters: trivial
Test-Parameters: testlist=sanity fstype=wbcfs mdscount=4 mdtcount=1 osscount=4 ostcount=1
Test-Parameters: testlist=sanity fstype=wbcfs combinedmdsmgs=false standalonemgs=true mdscount=1 mdtcount=1 osscount=4 ostcount=1
Signed-off-by: Timothy Day <timday@amazon.com>
Change-Id: I16678e57596365ce25d978e2b5a524fc4c21bf26
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/59417
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Lijing Chen <lijinc@amazon.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>