bnd: Delay Run Dependencies

Set the default to delay run dependencies. This is important for gradle
builds. The init.gradle script can be simplified to avoid having to set
this for each project before processing the projects.

Two test cases needed to set delay run dependencies to false for the
specific circularity issue they were testing.

Fixes https://github.com/bndtools/bnd/issues/513

Signed-off-by: BJ Hargrave <bj@bjhargrave.com>