Removes MCollective from the Razor Micro Kernel

MCollective was running as an external service. It used a
static configuration accessible to anyone who accessed
the source, and which could connect to an external master.
This was considered a security threat in the security
evaluation.

This commit removes MCollective completely. The impact of
doing this should be zero since it wasn't currently used.
Adds built artifacts to the .gitignore

Some folders are created during a build. This commit adds
then to the .gitignore to ensure that they are not commited
by mistake.
Limits the services on port 2156 and 2157 to localhost.

The Microkernel exposes two services on ports 2156 and 2157
as part of Tiny Core Linux. The service available on port 2156
handles configuration of the running Microkernel image. It is
unauthenticated, and allows users to load kernel modules and add
new extensions to TCL. The service on 2157 provides information
about the running system.

This commit limits those services to localhost, thus preventing
anyone from accessing them remotely.