Fixed directory check for swift settings
Fixed directory check for swift settings

Adjusted the solum devstack lib to check for $SWIFT_CONF_DIR

Change-Id: Ibded9063ebf540a79cf7ed8501fa2fa8dd654a90

stackforge/solum,gilbertpilz/solum,devdattakulkarni/test-solum,gilbertpilz/solum,gilbertpilz/solum,ed-/solum,devdattakulkarni/test-solum,stackforge/solum,ed-/solum,openstack/solum,openstack/solum,ed-/solum,gilbertpilz/solum,ed-/solum