Add support for querying for test output from AzureDevops public cloud

[smlambert]

We would like to be able to run tests in many different CI environments (to encourage testing 'everywhere' and to leverage resources at our disposal, https://dev.azure.com/adoptopenjdk).

This issue is an enhancement to TRSS to be able to query the AzDo API, much like it currently queries the Jenkins API, for monitoring tests in that CI environment.

There are still some open questions related to this enhancement that need to be answered that will be listed below.

[llxia]

We are looking into: https://github.com/microsoft/azure-devops-node-api

[smlambert]

We may not need this now that we are using Azure VM agents Jenkins plugin, but I will leave it open for a bit, while we determine if we/others still want to pursue it.

[smlambert]

FYI @d3r3kk @milderhc

[llxia]

I did some experiments last year. It is WIP. For detail, please see my personal branch: https://github.com/llxia/openjdk-test-tools/tree/azure

The idea is to have ciServers folder where we can support different ci servers (i.e., Jenkins, Azure, etc) with the same APIs.