Testing fixes

See merge request !13

Somehow missed that one.

Small fixes to correct for wrong actions on power control over a real
load.

Recent work has added and renamed binaries to the repository. This patch
syncs the setup.py file to match the current state.

This fixes missing binaries from path inside virtual environments.

Implement control loop

See merge request !12

Change the PowerActuator to be able to lower the power limit. Because
RAPL doesn't provide an actual lower limit, we use 0 as the minimal
power.

This patch adds a poweractuator based on rapl settings available through
the sensor manager. Adding this actuator forces us to use a list of
actuators in the controller, changing a bit the structure of the code.

This patch introduce one more level of abstraction to the controller:
an actuator. Actuators will act as the middleman between specific
managers and the controller, while providing enough info to implement
actual models on top.

For now, we only have the application threads actuator.

Initial support for perf wrapper

See merge request !11

The "control" part of the NRM is bound to change and become more complex
in the near future, so move it in its own module.

This refactor also introduce some controller logic. Control is split
into 3 steps: planning, execution and updates. The goal is to use this
new code organization as a way to abstract different control policies
that could be implemented later.

Note that we might at some point move into a "control manager" and a
bunch of "policies" and "actuators", as a way of matching typical
control theory vocabulary.

Small things like spacing and extra semicolon. It is also recommended to
use the 0o notation for octal, as a way to make them stand out in the
code.