no way to pass `--loadmodule` argument to command line

[mguijarr]

I would like to be able to start redis in tests, with redis-server extended with Redis extension modules.

The --loadmodule command line argument is here for this. Unfortunately it is not supported by pytest-redis.

I tried other possibilities, but actually it is not possible:

• to pass any keyword argument ( see issue #297)
• to specify a configuration file for the redis server started with pytest-redis
• regarding modules, without allowing it in a configuration file, it is forbidden to use the MODULE LOAD command once server is started

So, the easiest would really be to add modules as a valid keyword argument to the the Redis executor.

[mguijarr]

I made a pull request to fix this.

[mguijarr]

I made an update pull request