Make builder unit tests pass in vscode image. (#32815)

vscode image defines more environment variables. Provide
overrides for these variables in unit tests, so that they pass
for vscode image as well and they do not get picked up
from the system env.

Co-authored-by: Andrei Litvin <andreilitvin@google.com>

Author: andy31415

scripts/build/test.py

@@ -49,6 +49,8 @@ def build_actual_output(root: str, out: str, args: List[str]) -> List[str]:
         'TI_SYSCONFIG_ROOT': 'TEST_TI_SYSCONFIG_ROOT',
         'JAVA_PATH': 'TEST_JAVA_PATH',
         'GSDK_ROOT': 'TEST_GSDK_ROOT',
+        'WISECONNECT_SDK_ROOT': 'TEST_WISECONNECT_SDK_ROOT',
+        'WIFI_SDK_ROOT': 'TEST_WIFI_SDK_ROOT',
     })
 
     retval = subprocess.run([

scripts/build/testdata/dry_run_efr32-brd4161a-light-rpc-no-version.txt

@@ -2,7 +2,7 @@
 cd "{root}"
 
 # Generating efr32-brd4161a-light-rpc-no-version
-gn gen --check --fail-on-unused-args --export-compile-commands --root={root}/examples/lighting-app/silabs '--args=silabs_board="BRD4161A" is_debug=false import("//with_pw_rpc.gni") efr32_sdk_root="TEST_GSDK_ROOT" openthread_root="TEST_GSDK_ROOT/util/third_party/openthread"' {out}/efr32-brd4161a-light-rpc-no-version
+gn gen --check --fail-on-unused-args --export-compile-commands --root={root}/examples/lighting-app/silabs '--args=silabs_board="BRD4161A" is_debug=false import("//with_pw_rpc.gni") efr32_sdk_root="TEST_GSDK_ROOT" openthread_root="TEST_GSDK_ROOT/util/third_party/openthread" wiseconnect_sdk_root="TEST_WISECONNECT_SDK_ROOT" wifi_sdk_root="TEST_WIFI_SDK_ROOT"' {out}/efr32-brd4161a-light-rpc-no-version
 
 # Building efr32-brd4161a-light-rpc-no-version
 ninja -C {out}/efr32-brd4161a-light-rpc-no-version