Netutils-linux

- Added: i40e-tune script, some intel nics freezes RSS/interrupts until you enable/disable RPS.
- Added: landscape, pypi and license badges
- Clarified: MIT license choice
- Fixed: detect_virt.py didn't support py3
- Fixed: bug with yellow colour on some terminals in ubuntu/debian
- Fixed: lscpu -e usage worked probably only in CentOS 6. Replaced with lscpu -p.
- Fixed: got rid of the brctl dependency. Now bridge util from iproute2 is in use. Also we don't gather bridge topology in case of systems without carbon reductor.
- Added: new method of gathering netdev topology - by ethtool data.
- Fixed: rx-buffers-increase worked only on RHEL-based systems.
- Fixed: infinite run of top-like utils with -n -1 didn't work
- Fixed: russian locale broke lscpu output parsing in server-info.
- Fixed: running on CentOS 7 out of box (there is no lspci installed by default).
- Fixed: server info fails if there is only 1 block device in system.

- python 2.6, 2.7 and 3.6 support
- six used
- thanx 2 serbernar for help
- pytest used as test runner
- tests moved straight to packages (maybe bad decision)

- link-rate has highlighted errors
- softnet-stat-top has highlighted errors
- irqtop has highlighting for total irq counters if it is too big
- all threshold values moved to appropriate top-like utility from network-top
- nice refactoring, duplicity fighting and optimized imports return network-top to 118 lines from 138
- all libraries get rid of `if __name__ == '__main__'`
- missed-pkts-monitor has been deleted because it was doing the same task link-rate doing
- Makefile targets to run every top-like utility even on non-linux machine
- flake8 is in use for checking pep8 violations right in travis-ci

Aaaaand there are pretty much things to do.

Everything looks so beautiful and unified! :3

- colorama usage simplified colouring code
- prettytable allowed to get rid of all that "{0:>14} ...".format() magic.
- `.__repr__()`'s code of irqtop/link-rate just asking to be used in network-top without any changes

By the time, there is two new utils: maskify and subnet2iplist:

maskify: a46a0c41ff4d6dffcc12cad9cc0d25fe97f2af26
subnet2iplist: 1c87bbe7975cdcafea1a73593b49695892b46213 (really c53e505c86892260c171780edb816285628fdd3d)

Nice looking (colors, highlighting, layout) and working top-like utils with examples in README.
Still has a lot of :shit: in codebase.