consuming it directly from Maven Central.
The bundle net.i2p.crypto.eddsa 0.3.0 contains bad OSGi metadata,
earlier it was repackaged in Orbit tweaking its mandatory dependency to
sun.security.x509 to an optional dependency.
This project seems to be orphaned, probably because Java 15 added
support for eddsa with JEP339 [1].
This repackaged bundle is no longer available after Orbit was renovated
[2] to consume the vast majority of bundles directly from Maven Central
without repacking them. Hence we have to workaround this (probably
false) mandatory dependency. For that export an empty dummy package
"sun.security.x509" to satisfy OSGi.
[1] https://openjdk.org/jeps/339
[2] https://github.com/eclipse-orbit/orbit-simrel/issues/15
Change-Id: I2267e15823ebce6cf1d448e1e16a129f703e0f80
0b5d4c3aad