CDAP - Remove Deprecated Code

• Straight forward to remove most of the client api deprecations, except for schedule client and metrics client.
• Metrics Client - Runtime metrics usage have to be updated before removal. 
• Schedule Client - We have methods that are marked deprecated, but ScheduleInstanceConfiguration is not deprecated yet. No information on how to convert ScheduleInstanceConfiguration to ScheduleDetail ? 

• Schedule API related deprecation in AbstractApplication and ApplicationConfigurer - Related JIRA https://issues.cask.co/browse/CDAP-12692
• Use ProgramLifecycle Initialize and Destroy(deprecated) instead of Map-reduce beforeSubmit and onFinish. 
• Use ProgramLifecycle Initialize and Destroy (deprecated) instead of Spark beforeSubmit and onFinish. 
• Use ScheduleBuilder#withConcurrency instead of RunConstraints
• Use ScheduleCreationSpec instead of ScheduleSpecification  Related JIRA : https://issues.cask.co/browse/CDAP-11575
• Workflow Action and Related deprecation
  • Note : Workflow program is run as workflow action(wrapped) this needs to be handled appropriately. 

• Why do we have unused variable in IndexedTableDefinition which are deprecated ?
• there is a TODO to remove methods “getStreams, getDatasetModules, getDatasetSpecs", However there is no information on what to use instead for their usages. 

• ForwardingTwillPreparer deprecations can be ignored, those methods will be removed in the future from TwillPreparer API.
• Deprecation in CustomActionExecutor, DefaultWorkflowActionConfigurer, WorkflowNodeCreator related to Workflow Action deprecation.
• AppFabricTestbase, AppFabricClient deprecations for methods about Schedule Specification (CDAP-11575)

• use settableArguments method instead of get/set arguments
• use addOutput() for batch sink methods
• remove deprecated Engine class
• constructors deprecated in ETLBatchConfig, ETLConfig (v1)

• Methods in classes related to Preferences (get, set, load, delete) preferences.

• ApplicationDetail - use getArifact deprecated getArtifactVersion

• MetadataRecord deprecated without info on what to use instead - used at multiple places.

• remove getId method in ApplicationRecord, DatasetRecord, ProgramLiveInfo, ProgramRecord,
• Schedule related deprecation ScheduleDetail (toScheduleSpecs), ScheduleType, ScheduleUpdateDetail (CDAP-11575)
• Id class has a lot of deprecations, since its used widely, will be prudent to do those deprecations later.

• Id related deprecations
• waitForFinish in program manager
• schedules in workflow

• Implementation of test interfaces, so similar deprecations as above. 

CDAP-common

• Constants, KafkaConstants (simple except for one or two properties which were not deprecated properly)
• UnauthorizedException 

• encode/decode obsoleteAttributes methods in AbstractSnapshotCodec (note about breaking backward compatibility)
• TransactionEdit, TransactionEditCodecs (note about will be removed in future, here for backward compat)