I don't know anything about zenworks, but if you can't find a package for it, this is a universal method for all linuxes;
Download the *.tar.gz from https://get.adobe.com/flashplayer/
extract 'libflashplayer.so' and place it in either:
For systemwide 32bit: /usr/lib/mozilla/plugins
For systemwide 64bit: /usr/lib64/mozilla/plugins
Or per user: ~/.mozilla/plugins
The only downside is that you have to update it manually.