ZTS: update the relevant mmp test cases

- mmp_concurrent_import: added test case to verify that concurrent
  import correctness.  The pool may only be imported once.

- mmp_exported_import: an activity check is now required for pools
  which were cleanly exported if the system and pool hostids don't
  match.

- mmp_inactive_import: an activity check is now required for any
  pool which wasn't cleanly exported, even if the system and pool
  hostids match.

- mmp_on_uberblocks: updated expected uberblocks to take in to account
  the value MMP_INTERVAL_DEFAULT is set too.

- mmp_reset_interval: reduce the number of iterations from 10 to 3.
  This is sufficient to verify functionality and significantly speeds
  up the test.

- mmp_on_uberblocks: adjust the thresholds and increase the runtime
  to avoid false positives observed in CI.

- Update tests to use 'zhack action idle' instead of ztest to improve
  the reliability of the tests.

- Add additional log_note messages to test cases which have multiple
  verification steps to make it clear which portion of a test failed
  when reviewing the logs.

- Replace default_setup/cleanup_noexit calls with 'zpool create' and
  'zpool destroy' calls to avoid additional unnecessary dataset
  creation work.

- Update activity/noactivity check helper functions to use the
  ZFS_LOAD_INFO_DEBUG information now available from 'zpool import'
  to determine if this activity check ran and why.  This is more
  reliable in the CI than measuring the runtime.

- Removed all mmp tests from the zts-report.py exceptions list.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Olaf Faaland <faaland1@llnl.gov>
Reviewed-by: Akash B <akash-b@hpe.com>

tests/test-runner/bin/zts-report.py.in

@@ -247,7 +247,6 @@ maybe = {
     'l2arc/persist_l2arc_005_pos': ['FAIL', known_reason],
     'largest_pool/largest_pool_001_pos': ['FAIL', known_reason],
     'mmap/mmap_sync_001_pos': ['FAIL', known_reason],
-    'mmp/mmp_on_uberblocks': ['FAIL', known_reason],
     'pam/setup': ['SKIP', "pamtester might be not available"],
     'pool_checkpoint/checkpoint_discard_busy': ['FAIL', 11946],
     'projectquota/setup': ['SKIP', exec_reason],
@@ -366,9 +365,6 @@ elif sys.platform.startswith('linux'):
         'io/io_uring': ['SKIP', 'io_uring support required'],
         'limits/filesystem_limit': ['SKIP', known_reason],
         'limits/snapshot_limit': ['SKIP', known_reason],
-        'mmp/mmp_active_import': ['FAIL', known_reason],
-        'mmp/mmp_exported_import': ['FAIL', known_reason],
-        'mmp/mmp_inactive_import': ['FAIL', known_reason],
         'stat/statx_dioalign': ['SKIP', 'statx_reason'],
     })