Improve error message for edge_dump.sh when seed file already exists
When running the edge_dump.sh script, you would get a generic error message if a seed file already existed making you refer to logs to figure out what happened.
Current error message:
$ /p4/common/bin/edge_dump.sh 1 edge.1
Processing. This may take a while depending on checkpoint duration.
Log file is: /p4/1/logs/edge_dump.20210112-0449.log
Edge seed checkpoint dump failed!
Improved error message:
$ /p4/common/bin/edge_dump.sh 1 edge.1
Processing. This may take a while depending on checkpoint duration.
Log file is: /p4/1/logs/edge_dump.20210112-0456.log
/p4/1/checkpoints/p4_1.edge.1.seed.6.gz already exists.