Jenkinsfile updates

Changes:

- Disable macOS by default. These workers don't have python3 so they cannot a portion of the tests.
- Add python38 to the PATH on Windows.
- Various fixes to the environment variables on Windows.
- Always add the GVM GOROOT/bin to the PATH on POSIX. Same as was being done on Windows.
- Use bat instead of sh on Windows to run `mage dumpVariables`.

.ci/scripts/install-go.sh

@@ -10,7 +10,7 @@ GVM_CMD="${HOME}/bin/gvm"
 
 mkdir -p "${HOME}/bin"
 
-curl -sSLo "${GVM_CMD}" "https://github.com/andrewkroh/gvm/releases/download/v0.2.1/gvm-${ARCH}-amd64"
+curl -sSLo "${GVM_CMD}" "https://github.com/andrewkroh/gvm/releases/download/v0.2.2/gvm-${ARCH}-amd64"
 chmod +x "${GVM_CMD}"
 
 gvm ${GO_VERSION}|cut -d ' ' -f 2|tr -d '\"' > ${PROPERTIES_FILE}

.ci/scripts/install-tools.bat

@@ -9,8 +9,19 @@ IF ERRORLEVEL 1 (
 mkdir %WORKSPACE%\bin
 where /q gvm
 IF ERRORLEVEL 1 (
- curl -sL -o %WORKSPACE%\bin\gvm.exe https://github.com/andrewkroh/gvm/releases/download/v0.2.1/gvm-windows-amd64.exe
+ curl -sL -o %WORKSPACE%\bin\gvm.exe https://github.com/andrewkroh/gvm/releases/download/v0.2.2/gvm-windows-amd64.exe
 )
 FOR /f "tokens=*" %%i IN ('"gvm.exe" use %GO_VERSION% --format=batch') DO %%i
 
+go env
 go install -mod=vendor github.com/magefile/mage
+mage -version
+where mage
+
+if not exist C:\Python38\python.exe (
+    REM Install python 3.8.
+    choco install python -y -r --no-progress --version 3.8.2
+)
+python --version
+where python
+

.editorconfig

@@ -29,6 +29,10 @@ indent_style = tab
 [*.mk]
 indent_style = tab
 
+[Jenkinsfile]
+indent_size = 2
+indent_style = space
+
 [Vagrantfile]
 indent_size = 2
 indent_style = space