Keep dex files in bouncycastle-testdex.jar.

The sole "raison d'ĂȘtre" of the *-testdex.jar files is to
provide a version with dex files when the non-testdex jars
have the dex files stripped.

Test: m bouncycastle-testdex
      Manually verify size of the jar file.
Bug: 119868597
Change-Id: I3fa0cadf03a841239eecf375314e45186256876e
1 file changed