Please provide a documentation for the configuration of all 3 to become listed on http://www.certificate-transparency.org/resources-for-site-owners (see also https://ritter.vg/blog-require_certificate_transparency.html )
Moving to Tomcat 9 since supporting the TLS extension will require support from JSSE and OpenSSL. Currently CT support is available in OpenSSL 1.0.2 and that means Tomcat 9. I couldn't find any indication the Java supports or plans to support CT. Using a certificate with the CT extension should work for all current Tomcat versions with all connectors immediately.
see also Bug 59754
Ping. This should either work or not, as described.