Revert "Ansiblify the wheel build a little more"

This broke the images because configure_mirrors.sh expects afs-slug.sh
to be there, let's revert the removal of the afs-slug.sh script for
now.

This reverts commit 8a7456ed90.

Change-Id: Iff4c869786d2796a5c50ae383ebafbe946857d66

jenkins/scripts/afs-slug.sh

@@ -0,0 +1,45 @@
+#!/bin/bash -xe
+
+# 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.
+
+# This script generates a descriptor slug to use with AFS, composed of the
+# operating system, its version, and the processor architecture.
+
+# Pull in the os release.
+#   ID is 'fedora', 'centos', 'ubuntu'
+#   VERSION_ID is '23', '7', '14.04'
+#   Nothing else is useful and/or reliable across distros
+source /etc/os-release
+
+################################################################################
+# Generate an OS Release Name
+OS_TYPE=$ID
+
+################################################################################
+# Generate a version string.
+OS_VERSION=$VERSION_ID
+if [ "$OS_TYPE" != "ubuntu" ]; then
+    OS_VERSION=$(echo $OS_VERSION | cut -d'.' -f1)
+fi
+
+################################################################################
+# Get the processor architecture.
+#  x86_64, i386, armv7l, armv6l
+OS_ARCH=$(uname -m)
+
+################################################################################
+# Build the name
+AFS_SLUG="$OS_TYPE-$OS_VERSION-$OS_ARCH"
+AFS_SLUG=$(echo "$AFS_SLUG" | tr '[:upper:]' '[:lower:]')
+
+export AFS_SLUG