Plugin command to delete the directory for a given backup timestamp from a remote system.
<delete_backup> <plugin_config_file> <timestamp>
gpbackup_manager invokes the
delete_backup plugin command to delete the directory specified by the backup timestamp on the remote system.
delete_backup command must exit with a value of 0 on success, or a non-zero value if an error occurs. In the case of a non-zero exit code,
gpbackup_manager displays the contents of
stderr to the user.
my_plugin delete_backup /home/my-plugin_config.yaml 20191208130802