Remove cpu core from op_host_capacity when host is deleted (#4367)

When a host is put into maintenance mode or its deleted from
cloudstack then delete its entries from op_host_capacity table

Author: ravening

server/src/main/java/com/cloud/capacity/CapacityManagerImpl.java

@@ -1179,6 +1179,7 @@ public void processDiscoverEventBefore(Long dcid, Long podId, Long clusterId, UR
     public void processPrepareMaintenaceEventAfter(Long hostId) {
         _capacityDao.removeBy(Capacity.CAPACITY_TYPE_MEMORY, null, null, null, hostId);
         _capacityDao.removeBy(Capacity.CAPACITY_TYPE_CPU, null, null, null, hostId);
+        _capacityDao.removeBy(Capacity.CAPACITY_TYPE_CPU_CORE, null, null, null, hostId);
     }
 
     @Override

server/src/main/java/com/cloud/resource/ResourceManagerImpl.java

@@ -929,7 +929,7 @@ public void doInTransactionWithoutResult(final TransactionStatus status) {
                 }
 
                 // delete the op_host_capacity entry
-                final Object[] capacityTypes = {Capacity.CAPACITY_TYPE_CPU, Capacity.CAPACITY_TYPE_MEMORY};
+                final Object[] capacityTypes = {Capacity.CAPACITY_TYPE_CPU, Capacity.CAPACITY_TYPE_MEMORY, Capacity.CAPACITY_TYPE_CPU_CORE};
                 final SearchCriteria<CapacityVO> hostCapacitySC = _capacityDao.createSearchCriteria();
                 hostCapacitySC.addAnd("hostOrPoolId", SearchCriteria.Op.EQ, hostId);
                 hostCapacitySC.addAnd("capacityType", SearchCriteria.Op.IN, capacityTypes);