Fission support

[mcopik]

PR #56 brings basic support for deployment to Fission. Further development is needed.

• [ ] Review the data generated in Prometheus instance
• [ ] Change container type to gather microarchitectural features.

[mcopik]

There is a pending pull request with support for running our benchmark functions on Fission. We need to test if the following features are supported:

• [ ] Creating a new function in Fission.
• [ ] Invocation with the Fission driver.
• [ ] Invocations with HTTP trigger.
• [ ] Node.js functions.
• [ ] Python functions.
• [ ] Functions using storage.
• [ ] Updating existing function after code change.
• [ ] Updating existing function on a deployment with no cache.

The second part would be to update the code to the recent changes in SeBS:

• [ ] Independent deployment of Minio storage (see OpenWhisk)
• [ ] System, function, and trigger interfaces.