The build depends on a global tool corflags to complete.  Unblocking build for now.

This needs to be done before the merge from master so that we can properly verify the infrastructure changes.

* add ubuntu 16.04 to CI

* added ubuntu.16.04 to the list of runtimes

* make ID unique

* switch perf correctness to dev15-rc

* Switch everything to latest-or-auto-dev15-rc

Further distinguish the integration tests name to 'windows_debug_vs-integration' and 'windows_release_vs-integration'

Allow a period and vocative commas.

The new server's email plugin version has different syntax and the email publishing doesn't work currently anyway. Will be re-enabled at a future time

The new server's email plugin version has different syntax and the email publishing doesn't work currently anyway. Will be re-enabled at a future time

The new server's email plugin version has different syntax and the email publishing doesn't work currently anyway. Will be re-enabled at a future time

Another instasce of MSBuild not loading our bootstrap compiler.  Bug tracking that is:

    https://github.com/Microsoft/msbuild/issues/1183

closes #14595

* harden regex for test runs

* Update netci.groovy

* Update perf.groovy

Fixing the casing from VSI to Vsi, making protected members pascal cased, and ensuring that the required package Ids are correct.