Azure: Switch to dockerhub provider

`registry.fedoraproject.org/f32/fedora-toolbox` image is used to build
packages on Azure Pipelines.

registry.fedoraproject.org experiences an availability problem and makes
unstable FreeIPA CI.

Fedora also distributes its official images on https://hub.docker.com/_/fedora.
`fedora:32` is already used by FreeIPA CI to build the image for tests.

Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Francois Cami <fcami@redhat.com>

freeipa.spec.in

@@ -262,6 +262,7 @@ BuildRequires: python3-m2r
 BuildRequires:  jsl
 BuildRequires:  rpmlint
 BuildRequires:  softhsm
+BuildRequires:  keyutils
 BuildRequires:  python3-augeas
 BuildRequires:  python3-cffi
 BuildRequires:  python3-cryptography >= 1.6

ipatests/azure/Dockerfiles/Dockerfile.build.fedora

@@ -4,10 +4,6 @@ ENV container=docker LANG=en_US.utf8 LANGUAGE=en_US.utf8 LC_ALL=en_US.utf8
 
 ADD dist /root
 RUN echo 'deltarpm = false' >> /etc/dnf/dnf.conf \
-    && dnf install -y dnf-plugins-core \
-    && dnf config-manager --set-enabled updates-testing \
-    && dnf config-manager --set-enabled updates-testing-modular \
-    && dnf config-manager --set-disabled fedora-cisco-openh264 \
     && dnf update -y dnf \
     && sed -i 's/%_install_langs \(.*\)/\0:fr/g' /etc/rpm/macros.image-language-conf \
     && dnf install -y systemd \

ipatests/azure/templates/prepare-build-fedora.yml

@@ -5,6 +5,7 @@ steps:
     sudo dnf makecache || :
     echo "Installing base development environment"
     sudo dnf install -y \
+        'dnf-command(builddep)' \
         gdb-minimal \
         make \
         autoconf \

ipatests/azure/templates/variables-fedora.yml

@@ -1,7 +1,7 @@
 variables:
   IPA_PLATFORM: fedora
   # the Docker public image to build IPA packages (rpms)
-  DOCKER_BUILD_IMAGE: 'registry.fedoraproject.org/f32/fedora-toolbox'
+  DOCKER_BUILD_IMAGE: 'fedora:32'
 
   # the Dockerfile to build Docker image for running IPA tests
   DOCKER_DOCKERFILE: ${{ format('Dockerfile.build.{0}', variables.IPA_PLATFORM) }}