Can not connect to MS Active Directory using LDAP with SSL

[John.Cockerham]

I have tried to configure Jira-Service to use MS AD to authenticate users.  I am getting this error when testing the connection.

Connection test failed. Response from the server:
srv-vm-hsv-dc1.ca.local:636; nested exception is javax.naming.CommunicationException: srv-vm-hsv-dc1.ca.local:636 [Root exception is javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target]

I have imported the Certificate Authorities Root cert into the Java certificate store.  I would thing that you would need to create a CSR from the Jira-ServiceDesk application, sign it with the CA and then import the signed cert back into the Java certificate store.  I can't seem to find any instructions for setting up this certificate. My AD and Enterprise CA run on the same windows machine under Windows Server 2016.  My Jira-ServiceDesk is running on a Ubuntu 18.04 machine.  I am running Jira v8.9.0 with Service Desk v4.9.0