Revert "contrib: no longer install libuuid as build dependency"

Ups, we actually still require libuuid. Actually, we only need to
to build the example script `examples/C/glib/add-connection-gdbus.c`.
The proper solution would be to make this an optional dependency.

So far this was not yet done. Also, libuuid is really an ubiquitous
dependency on Linux, so it's not really a problem to have this build
dependency, even if it's just to build the examples.

This reverts commit c0a3947ff9.

.gitlab-ci.yml

@@ -47,10 +47,10 @@ variables:
   #
   # This is done by running `ci-fairy generate-template` and possibly bump
   # ".default_tag".
-  FEDORA_TAG:  '2021-01-28.0-2010ca4a2530'
-  UBUNTU_TAG:  '2021-01-28.0-93aff6dd74af'
-  DEBIAN_TAG:  '2021-01-28.0-93aff6dd74af'
-  CENTOS_TAG:  '2021-01-28.0-2010ca4a2530'
+  FEDORA_TAG:  '2021-01-28.0-9831d9f49e57'
+  UBUNTU_TAG:  '2021-01-28.0-b88d09982586'
+  DEBIAN_TAG:  '2021-01-28.0-b88d09982586'
+  CENTOS_TAG:  '2021-01-28.0-9831d9f49e57'
   ALPINE_TAG:  '2021-01-28.0-3913bcd6d86c'
 
   FEDORA_EXEC: 'bash .gitlab-ci/fedora-install.sh'

contrib/debian/REQUIRED_PACKAGES

@@ -73,6 +73,7 @@ install \
     python3-pip \
     python3-setuptools \
     udev \
+    uuid-dev \
     valgrind \
     \
     #end

contrib/fedora/REQUIRED_PACKAGES

@@ -65,6 +65,7 @@ install \
     libndp-devel \
     libselinux-devel \
     libtool \
+    libuuid-devel \
     make \
     meson \
     mobile-broadband-provider-info-devel \

contrib/fedora/rpm/NetworkManager.spec

@@ -254,6 +254,7 @@ BuildRequires: audit-libs-devel
 BuildRequires: gtk-doc
 %endif
 BuildRequires: libudev-devel
+BuildRequires: libuuid-devel
 BuildRequires: /usr/bin/valac
 BuildRequires: libxslt
 %if %{with bluetooth}