Enable OpenTelemetry for redis in cinema-15

[cmeiklejohn]

This is the next bit of work to setup the infrastructure you will be working on.

see: https://opentelemetry-python-contrib.readthedocs.io/en/latest/instrumentation/redis/redis.html

• add required imports and verify that it works
• fork this instrumentation by copying the necessary files (look at requests for an example) and place in this repo, rename instrumentor
• modify cinema-15 to use the forked versions in the same way we do the flask and requests instrumentation