Zend\Barcode
- ensure plugin managers are not shared by default
Zend\Barcode:
* Moved share flag into actual plugin manager
Merge branch 'hotfix/barcode-pluginmanager-shared' of git://github.com/ralphschindler/zf2 into hotfix/3729
Merge branch 'hotfix/3729'

Close #3729
Fixes #2862