Upgrade Vagrant to use Fedora 31

Vagrantfile

@@ -7,73 +7,35 @@ $script = <<SCRIPT
     echo "export MODULE_BUILD_SERVICE_DEVELOPER_ENV=1" > /etc/profile.d/module_build_service_developer_env.sh
     source /etc/profile.d/module_build_service_developer_env.sh
     dnf install -y \
-        fedmsg-hub \
-        fedmsg-relay \
-        fedpkg \
-        gcc \
-        gcc-c++ \
-        git \
-        koji \
-        krb5-devel \
-        krb5-workstation \
-        libffi-devel \
-        mock-scm \
-        openssl-devel \
-        python \
-        python-devel \
-        python2-dnf \
-        python-docutils \
-        python-flask \
-        python2-libmodulemd \
-        python-m2ext \
-        python-mock \
-        python-qpid \
-        python-solv \
-        python-sqlalchemy \
-        python-futures \
-        python2-pungi \
-        python3 \
-        python3-devel \
-        python3-docutils \
-        python3-pungi \
-        python3-virtualenv \
-        redhat-rpm-config \
-        redhat-rpm-config \
-        rpm-build \
-        swig \
-        sqlite \
-        bash-completion \
-        wget \
-        which
-
+      bash-completion \
+      python3-flake8 \
+      python3-mock \
+      python3-pytest \
+      python3-pytest-cov \
+      python3-tox \
+      rpm-build \
+      sqlite
+    # Install the runtime dependencies from the module-build-service spec file
+    curl -s https://src.fedoraproject.org/rpms/module-build-service/raw/master/f/module-build-service.spec -o /tmp/module-build-service.spec
+    dnf install -y $(rpmspec --parse /tmp/module-build-service.spec  | grep ^Requires: | tr -s ' ' | cut -d ' ' -f2)
     mbs_config_dir=/etc/module-build-service
     [ -e "$mbs_config_dir" ] || mkdir "$mbs_config_dir"
-    cp -r /opt/module_build_service/conf/* "$mbs_config_dir"
+    cd /opt/module_build_service
+    cp -r conf/* "$mbs_config_dir"
+
+    # Workaround because python3-koji has no egg-info file
+    sed -i '/koji/d' requirements.txt
+    # Remove Python 2 only dependencies
+    sed -i '/futures/d' requirements.txt
+    sed -i '/enum34/d' requirements.txt
+
+    python3 setup.py develop --no-deps
+    python3 setup.py egg_info
 SCRIPT
 
 $make_devenv = <<DEVENV
   set -e
-  env_dir=~/devenv
-  pip=${env_dir}/bin/pip
-  py=${env_dir}/bin/python
   code_dir=/opt/module_build_service
-
-  test -e $env_dir && rm -rf $env_dir
-
-  # solv is not availabe from pypi.org. libsolv has to be installed by dnf.
-  (cd; virtualenv -p python2 --system-site-packages devenv)
-
-  $pip install --upgrade pip kobo
-  $pip install -r $code_dir/test-requirements.txt
-  $pip install ipython
-
-  cd $code_dir
-  $py setup.py develop
-  $py setup.py egg_info
-
-  if ! grep ". $env_dir/bin/activate" ~/.bashrc >/dev/null; then
-      echo ". $env_dir/bin/activate" >> ~/.bashrc
-  fi
   if ! grep "^cd $code_dir" ~/.bashrc >/dev/null; then
       # Go to working directory after login
       echo "cd $code_dir" >> ~/.bashrc
@@ -81,7 +43,7 @@ $make_devenv = <<DEVENV
 DEVENV
 
 $config_pgsql = <<PGSQL
-dnf install -y postgresql postgresql-server python2-psycopg2
+dnf install -y postgresql postgresql-server python3-psycopg2
 
 pg_hba_conf=/var/lib/pgsql/data/pg_hba.conf
 
@@ -112,22 +74,12 @@ systemctl restart postgresql
 psql -U postgres -h 127.0.0.1 -c "DROP DATABASE IF EXISTS mbstest"
 psql -U postgres -h 127.0.0.1 -c "CREATE DATABASE mbstest"
 
-bashrc=/home/vagrant/.bashrc
-
 echo "******** Run Tests with PostgreSQL ********"
 echo "Set this environment variable to test with PostgreSQL"
 echo "export DATABASE_URI=postgresql+psycopg2://postgres:@127.0.0.1/mbstest"
 echo
 PGSQL
 
-$script_services = <<SCRIPT_SERVICES
-    bin_dir=~/devenv/bin
-    cd /opt/module_build_service
-    $bin_dir/mbs-upgradedb > /tmp/mbs-base.out 2>&1
-    $bin_dir/fedmsg-relay < /dev/null >& /tmp/fedmsg-relay.out &
-    $bin_dir/fedmsg-hub < /dev/null >& /tmp/fedmsg-hub.out &
-    $bin_dir/mbs-frontend < /dev/null >& /tmp/mbs-frontend.out &
-SCRIPT_SERVICES
 
 Vagrant.configure("2") do |config|
   config.vm.box = "fedora/31-cloud-base"
@@ -135,12 +87,10 @@ Vagrant.configure("2") do |config|
   # Disable the default share
   config.vm.synced_folder ".", "/vagrant", disabled: true
   config.vm.network "forwarded_port", guest_ip: "0.0.0.0", guest: 5000, host: 5000
-  config.vm.network "forwarded_port", guest_ip: "0.0.0.0", guest: 13747, host: 13747
   config.vm.provision "shell", inline: $script
   config.vm.provision "shell", inline: "usermod -a -G mock vagrant"
   config.vm.provision "shell", inline: $config_pgsql
   config.vm.provision "shell", inline: $make_devenv, privileged: false
-  config.vm.provision "shell", inline: $script_services, privileged: false, run: "always"
   config.vm.provider "libvirt" do |v, override|
     override.vm.synced_folder "./", "/opt/module_build_service", type: "sshfs"
     v.memory = 1024