remove requests version max

This change removes the max version specified for requests since the
requirements project no longer limits it to 1.2.2.

Change-Id: I96d14b4a84d975e8b08e9271db8d5e13d78019ae
Do not restrict flavor to only ID and integers

- Flavors with strings and not just ID/UUID strings are valid.
- Closes-Bug: 1209060

Change-Id: Idee389fce40f8982b263e1a4349a8565140b6584
Merge "Do not restrict flavor to only ID and integers"