gitlab-ci: Refactor vcvars settings on Windows jobs

Move references closer to where the variables are needed.

.gitlab/ci/windows10.yml

@@ -1,5 +1,12 @@
+.windows_vs2019:
+  variables:
+    VCVARSALL: "${VS160COMNTOOLS}\\..\\..\\VC\\Auxiliary\\Build\\vcvarsall.bat"
+    VCVARSPLATFORM: "x64"
+    VCVARSVERSION: "14.25"
 
 .cmake_build_windows: &cmake_build_windows
+  extends:
+    - .windows_vs2019
   stage: build
   timeout:  2 hours
   interruptible: true
@@ -39,6 +46,8 @@
 
 
 .cmake_test_windows: &cmake_test_windows
+  extends:
+    - .windows_vs2019
   stage: test
   timeout:  50 minutes
   interruptible: true
@@ -51,12 +60,6 @@
     #due to system load are not reported
     - "ctest-latest -VV -S .gitlab/ci/ctest_test.cmake"
 
-.windows_vs2019:
-  variables:
-    VCVARSALL: "${VS160COMNTOOLS}\\..\\..\\VC\\Auxiliary\\Build\\vcvarsall.bat"
-    VCVARSPLATFORM: "x64"
-    VCVARSVERSION: "14.25"
-
 # Build on windows10 with Visual Studio
 # Will have CUDA 10.2 once build issues are resolved
 build:windows_vs2019:
@@ -70,7 +73,6 @@ build:windows_vs2019:
     - msvc-19.25
     - large-memory
   extends:
-    - .windows_vs2019
     - .cmake_build_windows
     - .only-default
   variables:
@@ -92,7 +94,6 @@ test:windows_vs2019:
     - cuda-rt
     - turing
   extends:
-    - .windows_vs2019
     - .cmake_test_windows
     - .only-default
   dependencies: