Remove color output from puppet apply

This help when reading log files from nodepool. Otherwise we see the
following in the log files:

  [1;31mWarning: Config file /etc/puppet/hiera.yaml not found, using
  Hiera defaults[0m

Change-Id: I3a865e5107e2749ed44c144539af49e311e0125f
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

nodepool/elements/puppet/bin/prepare-node

@@ -49,7 +49,9 @@ EOF
 # Use detailed exit codes to get that info and determine whether
 # the return code indicates failure.
 set +e
-puppet apply --detailed-exitcodes --modulepath=/opt/build_git/openstack-infra/system-config/modules:/etc/puppet/modules /tmp/local.pp
+puppet apply --detailed-exitcodes --color=false \
+    --modulepath=/opt/build_git/openstack-infra/system-config/modules:/etc/puppet/modules \
+    /tmp/local.pp
 PUPPET_RETURN=$?
 if [ "$PUPPET_RETURN" -eq 4 ] || [ "$PUPPET_RETURN" -eq 6 ] ; then
     exit $PUPPET_RETURN

nodepool/scripts/prepare_node.sh

@@ -108,7 +108,8 @@ sudo /bin/bash /root/system-config/install_modules.sh
 
 set +e
 if [ -z "$NODEPOOL_SSH_KEY" ] ; then
-    sudo puppet apply --detailed-exitcodes --modulepath=/root/system-config/modules:/etc/puppet/modules \
+    sudo puppet apply --detailed-exitcodes --color=false \
+        --modulepath=/root/system-config/modules:/etc/puppet/modules \
         -e "class {'openstack_project::single_use_slave':
                     sudo => $SUDO,
                     thin => $THIN,
@@ -116,7 +117,8 @@ if [ -z "$NODEPOOL_SSH_KEY" ] ; then
             }"
     PUPPET_RET_CODE=$?
 else
-    sudo puppet apply --detailed-exitcodes --modulepath=/root/system-config/modules:/etc/puppet/modules \
+    sudo puppet apply --detailed-exitcodes --color=false \
+        --modulepath=/root/system-config/modules:/etc/puppet/modules \
         -e "class {'openstack_project::single_use_slave':
                     install_users => false,
                     sudo => $SUDO,