Add --max-inflight to openfaas

Changelog for 0.2.9:

• PR #99 Fixes #98: Add stable repo for grafana by @aidun

Commits
496f8b4 Add max-inflight flag to openfaas by @alexellis
0e93e38 Fixes #98: Add stable repo for grafana by @aidun
54037ee Inline travis build environment by @alexellis

Generated by Derek