Move packages to env file and allow extras per distro.

Config/ProvisionTests/env.standard

@@ -10,6 +10,14 @@ RAM=0.2G
 #STORAGE_DIR=../../Volumes/ProvisionTests
 PT_STORAGE_DIR=/tmp/ProvisionTests
 
+## Packages
+PACKAGES="git bash curl sudo which"
+EXTRA_ARCH=""
+EXTRA_DEBIAN=""
+EXTRA_FEDORA=""
+EXTRA_OPENSUSE=""
+EXTRA_UBUNTU=""
+
 ## Script
 REPO=https://git.hyperling.com/me/env-ansible
 BRANCH=dev