[Core] detect if spark.dynamicAllocation.enabled is set true and exit gracefully

[xwu99]

OAP MLlib does not support dynamic allocation. spark.dynamicAllocation.enabled should be set to false

[xwu99]

@minmingzhu could you add a check for spark.dynamicAllocation.enabled in isOAPEnabled (https://github.com/oap-project/oap-mllib/blob/master/mllib-dal/src/main/scala/com/intel/oap/mllib/Utils.scala#L29) for dynamic allocation and output an error and exit when dynamic allocation and OAP run at the same time.