Remove certs & application.properties from main jar

[mandy-chessell]

Description

The purpose of this PR was to remove the application.properties, keystore.p12 and truststore.p12 from the main Egeria OMAGServerPlatform jar since it is causing problems for a production deployment of Egeria.

The knock on effects were:

• the FVTs began to fail to start the platform because they started the platform in a build directory without the application.properties and certificate stores. Their gradle files have been updated to use a new test.applicaiton.properties files that correctly locates the certificate files when the FVT platforms are started.
• The OMAGServerPlatform.java code has more debug messages - particularly around its startup environment.
• The script that creates the certificates needed changing to ensure any newly created certificate files were copied to the right locations.

When testing the script that generates the truststore and keystore I discovered that MacOS users needed to install openssl. I updated the readme for the script with instructions to describe how to do this.

Related Issue(s)

• [BUG] The application.properties file is included in the server chassis jar file #7689
• Starting Egeria fails with SSL enabled #7688
• Creating an Egeria container with a pre-defined configuration #7681

Testing

Rebuilt egeria and proved the FVTs are running - also checked that the platform comes up when run from the assembly. Regenerated the certificates and ensured they are copied to the correct new locations.

Release Notes & Documentation

The documentation around our assembly and the build of the jar files needs significant improvement to explain where different parts of an installation (particularly when using the containers) comes from and what needs to be changed for a production deployment.

Additional notes