Cloud products are not trusting Certificates issued by Sectigo

Issue Summary

Our Cloud products are not trusting server certificates issued by Sectigo for application links.

Sectigo is a privately held company that offers SSL certificate and computer security products. It was previously known as Comodo and Comodo CA but has since been sold to new owners and changed its name to Sectigo on November 1st, 2018.

Steps to Reproduce

1. Try to create an applink with a server instance that uses a certificate issued by Sectigo.

Expected Results

It should trust the certificate.

Actual Results

The following error message is shown:

The remote certificate can't be trusted

Server JIRA may be using a self-signed SSL certificate or a certificate that was issued by a certificate authority that isn't known locally.

Notes

Certificates from Comodo are accepted, as per https://docs.oracle.com/javase/6/docs/technotes/tools/solaris/keytool.html#cacerts

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available