* [vcpkg] Improve error messages for incomplete Mono

* [vcpkg] Add mono upgrade notice for Ubuntu 18.04 users

* [vcpkg] Fix always failing to check CMake version due to preferring 'error' constructor in ExpectedS

* [vcpkg] Eagerly display the 'Ubuntu needs new mono' message to avoid users needing to install it twice

Co-authored-by: Robert Schumacher <roschuma@microsoft.com>

…itors (such as VS) (#15084)

* [vcpkg] Refactor end-to-end tests

* [vcpkg] Cherry-pick x-builtin-ports-root from #14999

* [vcpkg] Move create test from unit tests to e2e

Co-authored-by: Robert Schumacher <roschuma@microsoft.com>

Co-authored-by: Robert Schumacher <roschuma@microsoft.com>

…ineProvider (#15010)

* [vcpkg] Remove extra indirection in IVersionedPortfileProvider/IBaselineProvider

* [vcpkg] Address CR comment

Co-authored-by: Robert Schumacher <roschuma@microsoft.com>

Co-authored-by: Billy Robert O'Neal III <bion@microsoft.com>

#14969)

In #14891 @Hoikas points out that the port depends on Python but the portfile.cmake explicitly disables it with `-DPYILMBASE_ENABLE=FALSE`.

* [vcpkg ci] upload diff from clang-format to artifacts

this allows people who do not have access to clang-format to format their code via diff

…15137)

…++ 10 or g++ 9.3 (see #15148) (#15149)

* [vcpkg] Add VCPKG_ENV_PASSTHROUGH_UNTRACKED

* [vcpkg] CR comments

Co-authored-by: Robert Schumacher <roschuma@microsoft.com>

Co-authored-by: Cheney-Wang <v-xincwa@microsoft.com>

* set include directory correctly

* Revert "set include directory correctly"

This reverts commit bde9f29.

* try suggested fix

* try changes

* apply fix for comms-ublox

* fix commsdsl

* try moving in port dir

* Revert "try moving in port dir"

This reverts commit 93546df.

* set port version

* fix port version

Co-authored-by: Victor Romero <romerosanchezv@gmail.com>

* add usage file to comms

* add line to usage

Co-authored-by: Victor Romero <romerosanchezv@gmail.com>

…t. (#15112)