LU-16213 kfilnd: Fail sends of particular message type

LU-16213 kfilnd: Fail sends of particular message type

Add ability to use failure injection to specify a message type for
simulated failure.

For example, to simulate failure of all immediate messages:
 lctl set_param fail_loc=0xF114 fail_val=1

To simulate failure of a single hello request:
 lctl set_param fail_loc=0x8000F114 fail_val=4

HPE-bug-id: LUS-11128
Test-Parameters: trivial
Signed-off-by: Chris Horn <chris.horn@hpe.com>
Change-Id: I4a20e92826df75812ef5b81979944526e4b94d83
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/48782
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Ian Ziemba <ian.ziemba@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Ron Gredvig <ron.gredvig@hpe.com>