BigSea QoS infrastructure services intermediate version

This deliverable is the implementation (with an accompanying document) of the tools developed within WP3 and will include the ground technologies for advanced auto-scaling and load balancing, namely: initial version of (i) the mechanisms for Horizontal and Vertical elasticity of T3.2; (ii) approaches for proactive horizontal and vertical scaling and load balancing from T3.4; (iii) optimization based approaches for horizontal and vertical scaling and load balancing from T3.5.