Align operating system coverage with current support matrix

[mikemadden42]

We should align our operating system coverage with the current support matrix.

It looks like we are missing the following operating systems:

• [x] Ubuntu 14.04
• [x] Windows Server 2016

Additionally these operating systems are not included in the support matrix, but they are covered by our tests.

• [ ] openSUSE 42
• [x] Ubuntu 12.04

[mikemadden42]

The matrix has been updated.