MariaRocks: temporarily disable a few failing tests

Author: spetrunia

storage/rocksdb/mysql-test/rocksdb/t/disabled.def

@@ -47,6 +47,10 @@ blind_delete_without_tx_api: MDEV-12286: rocksdb.blind_delete_without_tx_api tes
 
 persistent_cache: Upstream RocksDB bug https://github.com/facebook/mysql-5.6/issues/579
 
+collation: Fails on gcc 4.8 and before,  MDEV-12433
+rocksdb  : Intermittent failures in BB
+unique_sec : Intermittent failures in BB  
+
 allow_no_pk_concurrent_insert: stress test
 rocksdb_deadlock_stress_rc: stress test
 rocksdb_deadlock_stress_rr: stress test