Tomcat 8 doesn't provide OSGi meta-data for the javax.servlet and javax.el packages.
The javax.servlet package is required by the openvpms-auth-plugin, so it fails to start.
The javax.el is required by the Atlassian REST plugin:
According to http://tomcat.apache.org/tomcat-9.0-doc/changelog.html OSGi meta-data was added in Tomcat 9.0.9, however it seems that even in the most recent release (9.0.35), the meta-data is incomplete; the packages are exported, but without version information:
If the javax.servlet or javax.el packages aren't detected by ExportPackages, add them, and set their versions to 3.1.0 and 3.0.0 respectively