Fix failing transaction spec tests (#835)

These tests will be fixed with PHPLIB-665 which is currently being worked on. Until then, we can skip these tests.

Author: alcaeus

tests/SpecTests/TransactionsSpecTest.php

@@ -39,6 +39,8 @@ class TransactionsSpecTest extends FunctionalTestCase
         'transactions/mongos-recovery-token: commitTransaction retry fails on new mongos' => 'isMaster failpoints cannot be disabled',
         'transactions/pin-mongos: remain pinned after non-transient error on commit' => 'Blocked on SPEC-1320',
         'transactions/pin-mongos: unpin after transient error within a transaction and commit' => 'isMaster failpoints cannot be disabled',
+        'transactions/errors-client: Client side error in command starting transaction' => 'PHPLIB-665',
+        'transactions/errors-client: Client side error when transaction is in progress' => 'PHPLIB-665',
     ];
 
     private function doSetUp()

tests/UnifiedSpecTests/UnifiedSpecTest.php

@@ -105,6 +105,7 @@ class UnifiedSpecTest extends FunctionalTestCase
         'crud/updateOne-dots_and_dollars: Updating document to set top-level dotted key on 5.0+ server' => 'CDRIVER-3895 and PHPC-1765',
         'crud/updateOne-dots_and_dollars: Updating document to set dollar-prefixed key in embedded doc on 5.0+ server' => 'CDRIVER-3895 and PHPC-1765',
         'crud/updateOne-dots_and_dollars: Updating document to set dotted key in embedded doc on 5.0+ server' => 'CDRIVER-3895 and PHPC-1765',
+        'valid-pass/poc-transactions: Client side error in command starting transaction' => 'PHPLIB-665',
     ];
 
     /** @var UnifiedTestRunner */