fix(package_php): pkg-config is a dependency

Author: EtienneM

support/package_php

@@ -6,6 +6,8 @@ if [ -n "$DEBUG" ]; then
     set -x
 fi
 
+which pkg-config 2> /dev/null || (apt-get update && apt-get install --yes pkg-config)
+
 basedir="$( cd -P "$( dirname "$0" )" && pwd )"
 source "$basedir/../conf/buildpack.conf"
 source "$basedir/lib/utils"