Write VCAP_APPLICATION data in log message

[anklei]

to match functionality of the java library and to enable future use cases, some data from VCAP_APPLICATION shall be written in the logs as well.In particular:

• "application_id";
• "application_name";
• "instance_index";
• "space_id";
• "space_name";
• "organization_id";
• "organization_name

Java implementation as reference: https://github.com/SAP/cf-java-logging-support/blob/8d835d382bf08614226b823d835cd21a6952e992/cf-java-logging-support-core/src/main/java/com/sap/hcp/cf/logging/common/VcapEnvReader.java#L32

[christiand93]

Hi, the majority of the mentioned fields is already configured, but some of them have differing names:

• "application_id": currently printed as "component_id"
• "application_name": currently printed as "component_name"
• "instance_index": currently printed as "component_instance"
• "space_id": existing
• "space_name": existing
• "organization_id": existing, has to be updated to be read from VCAP_APPLICATION
• "organization_name": existing, has to be updated to be read from VCAP_APPLICATION

How do we deal with the duplicated fields (component_id, component_name, component_instance)? Can we drop them?

[christiand93]

As of version 5.3.1 organization_id and organization_name are read from VCAP_APPLICATION.