Minor Release Update

Added

• add check to tns_delete.sh to check if dump file does exists. If yes the PID
  will be added to the file name.
• add scripts to remove host from replication completely.
• Add advanced flag to replication check script
• Add a script to verify replication status

Changed

• Change alias dsrs add the advanced option
• Clean up checks for variables as well output for the replication scripts
• minor code update for comments and redundancy

Fixed

• tns_functions.sh was not able to load BasEnv. Disable nounset, errexit and
  pipefail before source BasEnv
• add default value for TNS_ADMIN