Fixes #4245: Initialise /var/rudder/ncf/common on initial webapp install/upgrade to avoid CFEngine missing stdlib
Merge pull request #194 from jooooooon/int_4245/initialise_var_rudder_ncf_common_on_initial_webapp_install_upgrade_to_avoid_cfengine_missing_stdlib

Fixes #4245: Initialise /var/rudder/ncf/common on initial webapp install...