Fixes NRM not returning the first N resources (cpu and memory). This
is important for reproducibility and reducing variation

This commit adds a command-line interface to `daemon`:
```
usage: daemon [-h] [-c FILE] [-d] [--nrm_log NRM_LOG] [--hwloc HWLOC]
              [--argo_nodeos_config ARGO_NODEOS_CONFIG] [--perf PERF]
              [--argo_perf_wrapper ARGO_PERF_WRAPPER]

optional arguments:
  -h, --help            show this help message and exit
  -c FILE, --configuration FILE
                        Specify a config json-formatted config file to
                        override any of the available CLI options. If an
                        option is actually provided on the command-line, it
                        overrides its corresponding value from the
                        configuration file.
  -d, --print_defaults  Print the default configuration file.
  --nrm_log NRM_LOG     Main log file. Override default with the NRM_LOG.
                        environment variable
  --hwloc HWLOC         Path to the hwloc to use. This path can be relative
                        and makes uses of the $PATH if necessary. Override
                        default with the HWLOC environment variable.
  --argo_nodeos_config ARGO_NODEOS_CONFIG
                        Path to the argo_nodeos_config to use. This path can
                        be relative and makes uses of the $PATH if necessary.
                        Override default with the ARGO_NODEOS_CONFIG
                        environment variable.
  --perf PERF           Path to the linux perf tool to use. This path can be
                        relative and makes uses of the $PATH if necessary.
                        Override default with the PERF environment variable.
  --argo_perf_wrapper ARGO_PERF_WRAPPER
                        Path to the linux perf tool to use. This path can be
                        relative and makes uses of the $PATH if necessary.
                        Override default with the PERFWRAPPER environment
                        variable.
```

The logging module allow us to configure logging facilities once per
process using basicConfig, and then to use globally defined, named,
logger objects. This simplifies access to logger objects, their
configuration and remove pointers from all objects.

This patch refactor all the logging calls to use a single 'nrm' logger
object, using those facilities.

Implement an update allocation function to be able to update resource
tracking when containers are created and deleted.

The commit should make it easier to improve the resource manager later
on.

This patch refactor the resource management and hwloc code into a
working, albeit very simple scheduling policy. Indeed, the previous code
contained strong assumptions about the output of hwloc matching an Argo
NodeOS configuration used during the previous phase of the project, that
always contained enough CPUs and Mems to perform exclusive scheduling.

The current version is simpler, but should work on more regular systems.
The patch also improves code organization so that introducing more
complex scheduling algorithms will be simpler.

The testing of this code resulted in the discovery of simple bugs in the
daemon children handling code, which should work now.