Referred library mostly used to run 'private' methods by executing 'Deencapsulation.invoke'

Support of this functionality has been removed since
Version 1.36 (Oct 29, 2017):

Removed the "invoke" and "newInstance" methods from the Deencapsulation class, deprecated in version 1.35.

https://jmockit.github.io/changes.html#1.36

With migration of SDC to Java 11 running TCs, using this library, produce

java.lang.IllegalStateException: Running on JDK 9 requires -javaagent:<proper path>/jmockit-1.n.jar or -Djdk.attach.allowAttachSelf

Aim of this task is to remove/replace usage of this outdated library.

Here is list of modules still using this library:

• [INFO] Building openecomp-sdc-versioning-core 1.7.2-SNAPSHOT [38/160]
• [INFO] Building openecomp-sdc-enrichment-api 1.7.2-SNAPSHOT [50/160]
• [INFO] Building openecomp-tosca-converter-core 1.7.2-SNAPSHOT [68/160]
• [INFO] Building catalog-model 1.7.2-SNAPSHOT [151/160]