Generalize install-packages for yum

All of the yum-based install-packages scripts are doing essentially
the same thing, so let's use one script for all of the elements
that depend on the yum element.

Change-Id: I49e8c9b44e41bcf4cb9fa820e8a9179754694a97

elements/fedora/bin/install-packages

@@ -1,33 +0,0 @@
-#!/bin/bash
-
-# Copyright 2012 Hewlett-Packard Development Company, L.P.
-# All Rights Reserved.
-#
-# 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.
-
-set -e
-
-if [ "$1" = "-u" ] ; then
-  yum -y update
-  exit 0
-elif [ "$1" = "-d" ] ; then
-  EXTRA_ARGS="--downloadonly"
-  shift
-fi
-
-yum -y install $EXTRA_ARGS $(map-packages "$@")
-for pkg in "$@"; do
-  if [ "$pkg" = "python-pip" ] ; then
-    alternatives --install /usr/bin/pip pip /usr/bin/pip-python 10
-  fi
-done

elements/rhel/element-deps

@@ -1,3 +1,4 @@
 dib-run-parts
 cache-url
 rpm-distro
+yum

elements/rhel/pre-install.d/10-yum-blacklist

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+echo "ccache dkms" > /tmp/yum-blacklist

elements/yum/bin/install-packages

@@ -1,4 +1,7 @@
 #!/bin/bash
+
+# Copyright 2012 Hewlett-Packard Development Company, L.P.
+# All Rights Reserved.
 #
 # 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
@@ -14,15 +17,17 @@
 
 set -e
 
-# Update packages for the distro
 if [ "$1" = "-u" ] ; then
-  #yum -y update
+  yum -y update
   exit 0
+elif [ "$1" = "-d" ] ; then
+  EXTRA_ARGS="--downloadonly"
+  shift
 fi
 
 # Packages that aren't available in the distro but requested for installation
 # can be ignored by adding them to the exclude list
-BLACKLIST=(ccache dkms)
+BLACKLIST=$(cat /tmp/yum-blacklist 2>/dev/null || echo "")
 WHITELIST=()
 for i in "$@"
 do
@@ -37,4 +42,9 @@ if [ -n "$WHITELIST" ]; then
     rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
   fi
   yum -y install $(map-packages $WHITELIST)
+  for pkg in "$@"; do
+    if [ "$pkg" = "python-pip" ] ; then
+      alternatives --install /usr/bin/pip pip /usr/bin/pip-python 10
+    fi
+  done
 fi