Fixed issues

Review the list of Flink and SQL Stream Builder issues that are resolved in Cloudera Streaming Analytics 1.9.0.

CSA-2016: Deleting table from other teams
The issue about deleting table from other teams is fixed.
CSA-3867 - UDF case sensitivity
The issue regarding case sensitivity for UDFs is fixed.
CSA-3956 - SSB fails to parse SQL with comments
The issue regarding the failure to parse SQL queries with comments is fixed.
CSA-4044 - SSB keytab upload fails if keytab working dir is deleted
The issue regarding the keytab directory being deleted from the tmp folder is fixed.
CSA-4363 - Production mode does not use clean session variables
The issue about production mode not using clean session variables is fixed.