Merge branch 'master' of https://github.com/apache/incubator-amaterasu

# Conflicts:
#	common/src/main/kotlin/org/apache/amaterasu/common/configuration/enums/ActionStatus.kt
#	frameworks/spark/dispatcher/src/main/scala/org/apache/amaterasu/frameworks/spark/dispatcher/SparkSetupProvider.scala
#	leader/src/main/scala/org/apache/amaterasu/leader/execution/JobManager.scala
#	leader/src/main/scala/org/apache/amaterasu/leader/mesos/schedulers/JobScheduler.scala