Review $BE_HOME/lib/eclipse/plugins *bpmn* artefacts need in the BE docker image

**Context**
While creating BE application docker image, build_image.sh script deleting artefacts under $BE_HOME/lib/eclipse/plugins except *bpmn*. Investigate why *bpmn* is required ? and update delete list accordingly.

**Alternatives**
NA

**Has the feature been requested before?**
NA

**If the feature request is approved, would you be willing to submit a PR?**
Yes
