Install nodejs for RHEL/Fedora

nodejs is required for Horizon (ships a copy of lessc internally).  I
couldn't find nodejs in the rpm list, despite it being installed in
lib/horizon.  This adds to the rpm list as NOPRIME and retains the old
install point.

RHEL6 has nodejs in EPEL now, so we remove the old hack that installed
an upstream version and add it to the install mentioned previously

Change-Id: Ib3ee2f7d77e22666c9055c8528288c01b46a95d3

files/rpms/horizon

@@ -3,6 +3,7 @@ django-registration
 gcc
 httpd # NOPRIME
 mod_wsgi  # NOPRIME
+nodejs # NOPRIME
 pylint
 python-anyjson
 python-BeautifulSoup

lib/horizon

@@ -73,31 +73,6 @@ function _horizon_config_set() {
     fi
 }
 
-# Basic install of upstream nodejs for platforms that want it
-function install_nodejs() {
-    if [[ $(which node) ]]; then
-        echo "You already appear to have nodejs, skipping install"
-        return
-    fi
-
-    # There are several node deployment scripts; one may be more
-    # appropriate at some future point, but for now direct download is
-    # the simplest way.  The version barely matters for lesscss which
-    # doesn't use anything fancy.
-    local ver=0.10.1
-    local nodejs=node-v${ver}-linux-x64
-    local tar=$nodejs.tar.gz
-    local nodejs_url=http://nodejs.org/dist/v${ver}/${tar}
-
-    curl -Ss ${nodejs_url} | tar -C ${DEST} -xz
-    if [ $? -ne 0 ]; then
-        echo "*** Download of nodejs failed"
-        return 1
-    fi
-
-    # /usr/bin so it gets found in the PATH available to horizon
-    sudo ln -s $DEST/$nodejs/bin/node /usr/bin/node
-}
 
 # Entry Points
 # ------------
@@ -105,15 +80,7 @@ function install_nodejs() {
 # cleanup_horizon() - Remove residual data files, anything left over from previous
 # runs that a clean run would need to clean up
 function cleanup_horizon() {
-
-    if [[ is_fedora && $DISTRO =~ (rhel6) ]]; then
-    # if the /usr/bin/node link looks like it's pointing into $DEST,
-    # then we installed it via install_nodejs
-        if [[ $(readlink -f /usr/bin/node) =~ ($DEST) ]]; then
-            sudo rm /usr/bin/node
-        fi
-    fi
-
+    :
 }
 
 # configure_horizon() - Set config files, create data dirs, etc
@@ -199,21 +166,12 @@ function install_horizon() {
         exit_distro_not_supported "apache installation"
     fi
 
-    if [[ is_fedora && $DISTRO =~ (rhel6) ]]; then
-        # RHEL6 currently has no native way to get nodejs, so we do a
-        # basic install here (see cleanup_horizon too).
-        # TODO: does nova have a better way that we can limit
-        # requirement of site-wide nodejs install?
-        install_nodejs
-    fi
-
     # NOTE(sdague) quantal changed the name of the node binary
     if is_ubuntu; then
         if [[ ! -e "/usr/bin/node" ]]; then
             install_package nodejs-legacy
         fi
-    elif is_fedora && [[ "$os_RELEASE" -ge "18" ]]; then
-        # fedora 18 and higher gets nodejs
+    elif is_fedora && [[ $DISTRO =~ (rhel6) || "$os_RELEASE" -ge "18" ]]; then
         install_package nodejs
     fi