Manually update pip/setuptools...

...to guard against deprecation failures.
pip and setuptools are smart enough to work
out version compatibility for the current os/Py.

Also bypasses ancient pypa/setuptools#937

Signed-off-by: Ben Alkov <ben.alkov@redhat.com>

test.sh

@@ -68,15 +68,13 @@ function setup_kojic() {
     # https://fedoraproject.org/wiki/Changes/Making_sudo_pip_safe
     $RUN mkdir -p /usr/local/lib/python3.6/site-packages/
   fi
-RUN="$ENGINE exec -ti $CONTAINER_NAME"
 
-  # Install other dependencies for tests
-  if [[ $PYTHON_VERSION == 3 ]]; then
-    OSBS_CLIENT_DEPS="python3-PyYAML"
-  else
-    OSBS_CLIENT_DEPS="PyYAML"
-  fi
-  $RUN $PKG install -y $OSBS_CLIENT_DEPS
+  PIP_DEPS="pip setuptools wheel urllib3 requests six"
+  $RUN $PIP install -U "$PIP_DEPS"
+
+  RUN="$ENGINE exec -ti $CONTAINER_NAME"
+
+  $RUN $PIP install --upgrade --force-reinstall PyYAML
 
   # Install latest osbs-client by installing dependencies from the master branch
   # and running pip install with '--no-deps' to avoid compilation
@@ -99,16 +97,6 @@ RUN="$ENGINE exec -ti $CONTAINER_NAME"
   $RUN $PIP install --upgrade --force-reinstall \
       git+https://github.com/containerbuildsystem/dockerfile-parse
 
-  # CentOS needs to have setuptools updates to make pytest-cov work
-  # setuptools will no longer support python2 starting on version 45
-  if [[ $OS != "fedora" ]]; then
-    $RUN $PIP install -U 'setuptools<45'
-
-    # Watch out for https://github.com/pypa/setuptools/issues/937
-    $RUN curl -O https://bootstrap.pypa.io/2.6/get-pip.py
-    $RUN $PYTHON get-pip.py
-  fi
-
   # https://github.com/jaraco/zipp/issues/28
   if [[ $PYTHON_VERSION == 2 ]]; then
     $RUN $PIP install zipp==1.0.0