Add ListFlavors() and acceptance test.
This is required to support server creation acceptance testing. Without
the ability to detect flavors automatically, it isn't possible to
automate acceptance testing, as then a human operator would be required
to manually intervene while testing.
diff --git a/interfaces.go b/interfaces.go
index ee02baf..649e756 100644
--- a/interfaces.go
+++ b/interfaces.go
@@ -26,5 +26,9 @@
// Images
ListImages() ([]Image, error)
+
+ // Flavors
+
+ ListFlavors() ([]Flavor, error)
}