Print out any errors during SIGTERM-caused shutdown (#389)
Print out any errors during SIGTERM-caused shutdown (#389)

* Print out any errors during SIGTERM-caused shutdown

Co-authored-by: Kurtis Van Gent <dbdae6c357ede9a5d333d52f7521158034e34b9f@users.noreply.github.com>
GoogleCloudPlatform/cloud-sql-proxy,GoogleCloudPlatform/cloud-sql-proxy