[bndtools] Create test bndrun for latest version of Eclipse

[kriegfrj]

The Eclipse version that we build against for Bndtools is typically a year or two behind the latest version. This is also the version that our existing bndtools.*.bndrun files launch.

It is not uncommon to hit bugs in Bndtools that only manifest in versions of Eclipse that are later than the baseline we are buliding/testing against (#4433 (comment), https://bnd.discourse.group/t/test-bnd-bndtools-bundle-in-eclipse/358/3). It would be handy if we had a .bndrun in the workspace that would launch an Eclipse instance with Bndtools installed that could be used to test against a later version of Eclipse.

[pkriens]

@kriegfrj do you intend to open a PR?

[kriegfrj]

Hopefully soon, I'm prioritising the Builder enhancements.

[pkriens]

@kriegfrj could you move this to the 7.1 project and close this?

[pkriens]

@peterkir has some contributions here.