[tracker-oci-images/sam/umockdev-2] Install umockdev package in Ubuntu

[Sam Thursfield <sthursfield src gnome org>]

commit bd78197dcaab3f59bd6b784845971253dccdf382
Author: Sam Thursfield <sam afuera me uk>
Date:   Sat May 23 00:07:23 2020 +0200

    Install umockdev package in Ubuntu
    
    We were installing the support library but not the main package,
    leading to https://gitlab.gnome.org/GNOME/tracker-miners/-/jobs/733182

 debian/prepare.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/debian/prepare.sh b/debian/prepare.sh
index 882315b..9d15a9d 100644
--- a/debian/prepare.sh
+++ b/debian/prepare.sh
@@ -12,7 +12,7 @@ apt-get -yq update && apt-get -yq upgrade
 apt-get -yq build-dep tracker tracker-miners
 
 # Test suite dependencies
-apt-get -yq install libumockdev-dev
+apt-get -yq install umockdev libumockdev-dev
 
 # For building manpages and website.
 apt-get -yq install --no-install-recommends asciidoc-base