[epp-dev] Update to 2020-09 installs the JustJ JRE

[Ed Merks <ed.merks@xxxxxxxxx>]

FYI,

This bug describes the problem mentioned in the title of this email:

  https://bugs.eclipse.org/bugs/show_bug.cgi?id=567504

The problem was also noticed here:

https://www.eclipse.org/forums/index.php/mv/msg/1105521/1833352/#msg_1833352

I was able to reproduce this as well, i.e., install (with the installer) 
the 2020-06 (or 2020-03) JEE package, and then check for updates.  After 
the updates the JustJ JRE plugin and fragment are installed, but not the 
feature, so the user has no possibility to opt out nor to uninstall it.

This is unexpected p2 behavior because there are no explicit 
requirements on the JRE plugins, so either the EE capabilities or the 
java.package capabilities of the JRE plugin are being resolved 
preferentially over the available alternatives.

I suppose one way to fix this is to not include the JREs in the EPP p2 
repo...

Regards,
Ed