daemon: port to gcr-3

This removes the dependency on libgnome-keyring and adds a dependency
on libgcr instead.

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
Signed-off-by: Stef Walter <stefw@redhat.com>
 * Updated commit message

https://bugzilla.gnome.org/show_bug.cgi?id=771522