Added MAINTAINERS to top-level repo directory
Added MAINTAINERS to top-level repo directory

In a consensus reached in a proposal for code review process
change [1], and proposed team structure policy document [2],
adding MAINTAINERS files in repositories.

Please note, that this file is written in YAML format in order
to allow further automation around code review process.

[1] http://lists.openstack.org/pipermail/openstack-dev/2015-August/072406.html
[2] https://review.openstack.org/#/c/225376/

Fuel-CI: disable

Change-Id: I0090fb3f9bac3a15a28dc11671e8dce0edc2a94b
Signed-off-by: Sergii Golovatiuk <98168b9e97e341cddc0074e7bec42876c0bd6617@mirantis.com>

ddepaoli3/fuel-library-dev,stackforge/fuel-library,huntxu/fuel-library,eayunstack/fuel-library,stackforge/fuel-library,xarses/fuel-library,xarses/fuel-library,ddepaoli3/fuel-library-dev,ddepaoli3/fuel-library-dev,eayunstack/fuel-library,huntxu/fuel-library,ddepaoli3/fuel-library-dev,ddepaoli3/fuel-library-dev,xarses/fuel-library,eayunstack/fuel-library,huntxu/fuel-library,huntxu/fuel-library,eayunstack/fuel-library,eayunstack/fuel-library,huntxu/fuel-library,stackforge/fuel-library,xarses/fuel-library,stackforge/fuel-library