LU-5361 llite: Remove OBD_FAIL_OSC_CONNECT_CKSUM

LU-5361 llite: Remove OBD_FAIL_OSC_CONNECT_CKSUM

Remove OBD_FAIL_OSC_CONNECT_CKSUM as all clients and servers
since 1.8 support OBD_CONNECT_CKSUM. No reason to check
interoperability with older servers anymore. Remove sanity
test_77i(), update test_77j().
Fix _wait_osc_import_state() to fetch OST state when facet
is client.

Seagate-bug-id: MRP-1421
Signed-off-by: Abrarahmed Momin <abrar.habib@seagate.com>
Change-Id: I664f50bc8dbd3a169bcb7e42706717416d6e1006
Reviewed-on: https://review.whamcloud.com/23644
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>