Take latest build-infra
Merge pull request #37 from Metaswitch/sto519-update-build-infra

[No review required] Take latest build-infra
Take latest build-infra (fix build)
Merge pull request #38 from Metaswitch/sto519-fix-build

[No review required] Take latest build-infra (fix build)
Update regular expression to match IPv6 addresses
Merge pull request #39 from Metaswitch/ipv6

[reviewer: Mike] Update hostname to match IPv6 addresses