PHPLIB-466: Skip tests creating isMaster failpoints

The isMaster failpoint can't be reliably disabled again in these tests, causing subsequent test failures.

Author: alcaeus

tests/SpecTests/TransactionsSpecTest.php

@@ -36,7 +36,9 @@ class TransactionsSpecTest extends FunctionalTestCase
     private static $incompleteTests = [
         'error-labels: add unknown commit label to MaxTimeMSExpired' => 'PHPC-1382',
         'error-labels: add unknown commit label to writeConcernError MaxTimeMSExpired' => 'PHPC-1382',
+        'mongos-recovery-token: commitTransaction retry fails on new mongos' => 'isMaster failpoints cannot be disabled',
         'pin-mongos: remain pinned after non-transient error on commit' => 'Blocked on SPEC-1320',
+        'pin-mongos: unpin after transient error within a transaction and commit' => 'isMaster failpoints cannot be disabled',
         'read-pref: default readPreference' => 'PHPLIB does not properly inherit readPreference for transactions',
         'read-pref: primary readPreference' => 'PHPLIB does not properly inherit readPreference for transactions',
         'run-command: run command with secondary read preference in client option and primary read preference in transaction options' => 'PHPLIB does not properly inherit readPreference for transactions',