MOB should compatible with other types of Compactor in addition to DefaultCompactor

Currently when MOB feature enabled, we will use MobStoreEngine to deal with flush and compaction, but it extends DefaultStoreEngine, so the stripe compaction feature can not be used.
In some scenes, Stripe Compaction are very useful, it can reduce the number of regions and prevent a single storefile grow too large，If it
compatible with MOB feature, that’s perfect.