Work around zuul-jobs bug

Bake the tox package into our DIB elements to make tox jobs work.  We
should revert this once zuul-jobs has been updated to work properly
with the ensure-tox role.

Change-Id: Id5c672f040d791b14787c895d260afd328ad2702
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

config/nodepool/elements/zuul-worker/install.d/10-pip-packages

@@ -0,0 +1,26 @@
+#!/bin/bash
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+#
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# dib-lint: disable=setu setpipefail
+if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
+    set -x
+fi
+set -e
+
+# NOTE(pabelanger): This is to work around a bug in the zuul-jobs tox role, this
+# is because ensure-tox installs into ~/.local/bin however ansible doesn't
+# incude that within PATH by default.
+pip install tox