Unable to update SpanVA.
Diagnostics reporting of spanva reports not errors.
Customer requires IP whitelisting because of DNS whitelisting issues.
DNS whitelisting is preferred as amazon ranges could change without notice.
IPs as per https://ip-ranges.amazonaws.com/ip-ranges.json for S3 US West (N. California) [us-west-1] :
52.92.48.0/22
54.231.232.0/21
52.219.20.0/22
52.219.24.0/21
52.219.120.0/22
52.219.112.0/21