After switching to grpc-win2019 kokoro image, the windows C++
distribtest got slightly slower (from about ~1500sec to ~1650sec), which
got us too close to the 1800sec time limit and thus we've seen the
windows distribtests occasionally time out.

I'd still like to look into speeding up the distribtests, but for now we
don't want frequest test timeouts in the CI.

example failure: 

https://fusion2.corp.google.com/ci;ids=1923284992/kokoro/prod:grpc%2Fcore%2Fmaster%2Fwindows%2Fgrpc_distribtests_standalone/activity/996fd2cf-bef3-4490-85da-a52765d84127/log

```
2023-03-20 23:43:44,740 TIMEOUT: distribtest.cpp_windows_x86_cmake_as_externalproject [pid=5984, time=1800.1sec]
```

Try to avoid the `ccache: error: Failed to read from file stream` build
failures that started happening once we upgraded to the grpc-win2019
image.

e.g.
https://source.cloud.google.com/results/invocations/e94c2f35-6d1f-4d89-853a-be7e1e1747de/targets/github%2Fgrpc%2Ftoplevel_run_tests_invocations%2Frun_tests_c_windows_opt_native/tests

```
C:\ccache\ccache.exe C:\PROGRA~2\MICROS~1\2017\COMMUN~1\VC\Tools\MSVC\1416~1.270\bin\Hostx64\x86\cl.exe  /nologo /TP -DCARES_STATICLIB -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_WARNINGS -D_WIN32_WINNT=0x600 -D_WINSOCK_DEPRECATED_NO_WARNINGS -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\third_party\re2 -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\third_party\zlib -IT:\altsrc\github\grpc\workspace_c_windows_opt_native -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\include -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\third_party\address_sorting\include -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\cmake\build\third_party\re2 -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\third_party\boringssl-with-bazel\src\include -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\src\core\ext\upb-generated -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\src\core\ext\upbdefs-generated -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\third_party\upb -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\third_party\xxhash -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\cmake\build\third_party\zlib -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\third_party\abseil-cpp -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\cmake\build\third_party\cares\cares -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\third_party\cares\cares -IT:\altsrc\github\grpc\workspace_c_windows_opt_native\third_party\cares\cares\include /DWIN32 /D_WINDOWS /W3 /GR /EHsc  /MP8 /wd4065 /wd4506 /wd4200 /wd4291 /wd4244 /wd4267 /wd4987 /wd4774 /wd4819 /wd4996 /wd4619 /wd4503 /utf-8 /MD /O2 /Ob2 /DNDEBUG /showIncludes /FoCMakeFiles\invalid_call_argument_test.dir\test\core\end2end\cq_verifier.cc.obj /FdCMakeFiles\invalid_call_argument_test.dir\ /FS -c T:\altsrc\github\grpc\workspace_c_windows_opt_native\test\core\end2end\cq_verifier.cc
ccache: error: Failed to read from file stream
```

(part of removing support for VS2017)

Also see grpc#32649
Also see grpc#32615

The switch to grpc-win2019 windows workers has already happened:
(cl/517400022).

Once this PR lands, I'll backport to 1.53.x branch as well (since that
release removes the VS2017 support).