Updates keyringer: 7ae8884 Docs: using gbp instead of git-buildpackage and git-import...

diff --git a/keyringer b/keyringer
index 1016e50bf46192166938b612e516f556ac674ebf..7ae888494558998e9b7a296ca90c10d83f411008 160000 (submodule)
--- a/keyringer
+++ b/keyringer
@@ -1 +1 @@
-Subproject commit 1016e50bf46192166938b612e516f556ac674ebf
+Subproject commit 7ae888494558998e9b7a296ca90c10d83f411008