Description of problem:
Property "independent" is set to false when CallActivity is created by jBDS.

Version-Release number of selected component (if applicable):


Steps to Reproduce:
1. Create a process with CallActivity in JBDS
2. Click the CallActivity and view 'Properties'


Actual results:
Property "independent" is set to 'false'

Expected results:
Property "independent" is set to 'true' by default

Additional info:
In business-central, when creating Reusable(CallActivity) sub process, it's set to 'true. According to community document[1]. default is 'true'. so this should be set to 'true' by jBDS as well in order to avoid any confusion/unexpected behavior.

[1]
https://access.redhat.com/documentation/en-US/Red_Hat_JBoss_BPM_Suite/6.1/html/Development_Guide/sect-Activities.html#Subprocesses