Bug 577863 - Allow director app to install PGP-signed artifact

Override prompt action for PGP keys as well.

Change-Id: Iad5ec56724fc8eff6c64a2952ad79d5202306f53
Reviewed-on: https://git.eclipse.org/r/c/equinox/rt.equinox.p2/+/188954
Tested-by: Equinox Bot <equinox-bot@eclipse.org>
Reviewed-by: Mickael Istria <mistria@redhat.com>
6 files changed