Update MKL version from 0920 to 1007 (#1076)
Update MKL version from 0920 to 1007 (#1076)

This PR is intended to update MKL version installed by default from 0920 to 1007 release. Compared benchmarks performance between these two and with MKL 1007. We observe:

- Lenet with Mnist datalayer/nodatalayer: 300% performance increase
- DCGANs/WGANs on LSUN datalayer: 60% performance increase
- SSD_VGG - 10% performance increase
- GoogleNet - 3-5% performance increase

No performance regressions were observed
NervanaSystems/neon,NervanaSystems/neon,NervanaSystems/neon,NervanaSystems/neon