Require 'requests' package during pip installation
Require 'requests' package during pip installation

The requests package was missing when running leapp-repository unit tests -
leapp framework was being installed by leapp-repository makefile as a dependency,
but without this dependency of leapp framework.
That caused an incorrect workaround on the leapp-repository side:
https://github.com/oamg/leapp-repository/pull/410

leapp-to/prototype,leapp-to/prototype,leapp-to/prototype,leapp-to/prototype