Feature: JAX-RS TLS server configuration

[marc92w]

• Please check if the PR fulfills these requirements

• The commit message describes your change
• Tests for the changes have been added if possible (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• Changes are mentioned in the changelog (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Enable HTTPS configuration for JAX-RS server.

• What is the current behavior? (You can also link to an open issue here)

JAX-RS server can not be configured to be accessed via HTTPS: Setting jaxrs.protocol to HTTPS does not work because protocol HTTP is hardcoded in jaxrs-server.xml

• What is the new behavior (if this is a feature change)?

JAX-RS server can be configured to be accessed via HTTPS.

• Does this PR introduce a breaking change? (What changes might users need to make in their setup due to this PR?)

No, default protocol HTTP should not be affected.