The severity level of platform logging for this channel. Logs with a
severity level higher than or equal to the chosen severity level
will be logged and can be viewed through Cloud Logging. The severity
level of a log is ranked as followed from low to high: DEBUG < INFO
< NOTICE < WARNING < ERROR < CRITICAL < ALERT < EMERGENCY. See
LogSeverity <https://cloud.google.com/logging/docs/reference/v2/rest/v2/LogEntry#logseverity>__
for more information.
