Release Notes updated
Release Notes updated

* added `Full support of Quantum networking engine` feature
* added `Nagios deployment is disabled` limitation

ogelbukh/fuel-docs,ogelbukh/fuel-docs,stackforge/fuel-docs,stackforge/fuel-docs,phillipsio/fuel-docs,ogelbukh/fuel-docs,phillipsio/fuel-docs,phillipsio/fuel-docs,ogelbukh/fuel-docs,phillipsio/fuel-docs