Pass parameters to CMake in a correct way (#4531)

azure-pipelines.yml

@@ -109,7 +109,7 @@ stages:
     - bash: |
         mkdir build
         cd build
-        cmake -G Ninja $BUILD_SOURCESDIRECTORY -C $BUILD_SOURCESDIRECTORY/cmake/caches/PredefinedParams.cmake -DSPIRV_BUILD_TESTS=ON -DCMAKE_BUILD_TYPE=${configuration} -DCMAKE_C_COMPILER=${CC} -DCMAKE_CXX_COMPILER=${CXX} -DCMAKE_CXX_FLAGS=${CXX_FLAGS}
+        cmake -G Ninja $BUILD_SOURCESDIRECTORY -C $BUILD_SOURCESDIRECTORY/cmake/caches/PredefinedParams.cmake -DSPIRV_BUILD_TESTS=ON -DCMAKE_BUILD_TYPE=$(configuration) -DCMAKE_C_COMPILER=$(CC) -DCMAKE_CXX_COMPILER=$(CXX) -DCMAKE_CXX_FLAGS=$(CXX_FLAGS)
       displayName: 'Running Cmake'
     - bash: |
         cd build