Move inventory to new repo

inventory-app/const.py

@@ -0,0 +1,19 @@
+import os
+
+def getenv_in(key, *vals):
+    val = os.getenv(key)
+    if val not in vals:
+        raise ValueError("Got %s for %s, expected one of %s" % (repr(val), key, vals))
+    return val
+
+def file_exists(path):
+    if not os.path.isfile(path):
+        raise ValueError("Required file %s not found" % path)
+
+ENVIRONMENT_TYPE = getenv_in("ENVIRONMENT_TYPE", "DEV", "PROD")
+
+SECRET_KEY = os.environ["SECRET_KEY"]
+AWS_ENDPOINT_URL = os.environ["AWS_ENDPOINT_URL"]
+INVENTORY_ASSETS_BASE_URL = os.environ["INVENTORY_ASSETS_BASE_URL"]
+MONGO_URI = os.environ["MONGO_URI"]
+MEMBERS_HOST = os.environ["MEMBERS_HOST"]