[vcpkg] pass -disableMetrics to bootstrap on git bash

[strega-nil]

in git bash, we call back into bootstrap-vcpkg.bat,
but we don't pass -disableMetrics through.
This commit corrects this.

Fixes #11274

[strega-nil]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[PhoebeHui]

LGTM!

@linquize, does this fix work for you?

[PhoebeHui]

@strega-nil, I test it, it looks doesn't work, can you confirm? you can see the 'vcpkgmetricsuploader.exe' generated and move to vcpkg\scripts.

MINGW64 /f/vcpkg/11299/vcpkg (bootstrap-disable-metrics)
$ ./bootstrap-vcpkg.sh -disableMetrics
Building vcpkg.exe ...

pch.cpp
....
update.cpp
userconfig.cpp
vcpkgcmdarguments.cpp
vcpkglib.cpp
vcpkgpaths.cpp
versiont.cpp
visualstudio.cpp
vcpkglib.vcxproj -> F:\VCPKG\11299\vcpkg\toolsrc\msbuild.x86.release\vcpkglib.lib
vcpkg.cpp
Generating code
All 21526 functions were compiled because no usable IPDB/IOBJ from previous compilation was found.
Finished generating code
vcpkg.vcxproj -> F:\VCPKG\11299\vcpkg\toolsrc\msbuild.x86.release\vcpkg.exe
vcpkgmetricsuploader.cpp
Generating code
All 8117 functions were compiled because no usable IPDB/IOBJ from previous compilation was found.
Finished generating code
vcpkgmetricsuploader.vcxproj -> F:\VCPKG\11299\vcpkg\toolsrc\msbuild.x86.release\vcpkgmetricsuploader.exe

Building vcpkg.exe... done.

[PhoebeHui]

I tried '.\bootstrap-vcpkg.bat -disableMetrics' on master with latest source. you can see vcpkgmetricsuploader disabled.

PS F:\vcpkg\src> .\bootstrap-vcpkg.bat -disableMetrics

Building vcpkg.exe ...

pch.cpp
archives.cpp
checks.cpp
chrono.cpp
cofffilereader.cpp
...
userconfig.cpp
vcpkgcmdarguments.cpp
vcpkglib.cpp
vcpkgpaths.cpp
versiont.cpp
visualstudio.cpp
vcpkglib.vcxproj -> F:\VCPKG\src\toolsrc\msbuild.x86.release\vcpkglib.lib
vcpkg.cpp
Generating code
All 21312 functions were compiled because no usable IPDB/IOBJ from previous compilation was found.
Finished generating code
vcpkg.vcxproj -> F:\VCPKG\src\toolsrc\msbuild.x86.release\vcpkg.exe

Building vcpkg.exe... done.

[strega-nil]

@PhoebeHui that actually changed recently; we used to build vcpkgmetricsuploader always, not just when metrics were enabled (at least aiui). If you rebase this onto master, you'll see that vcpkgmetricsuploader no longer gets built.