Ensure node and npm are in the path when running tests

tools/run_tests/build_node.bat

@@ -27,6 +27,10 @@
 @rem (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 @rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+set PATH=%PATH%;C:\Program Files\nodejs\;%APPDATA%\npm
+
+del /f /q BUILD || rmdir build /s /q
+
 call npm install --build-from-source
 
 @rem delete the redundant openssl headers

tools/run_tests/pre_build_node.bat

@@ -27,6 +27,8 @@
 @rem (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 @rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+set PATH=%PATH%;C:\Program Files\nodejs\;%APPDATA%\npm
+
 @rem Expire cache after 1 week
 call npm update --cache-min 604800
 

tools/run_tests/run_node.bat

@@ -27,6 +27,7 @@
 @rem (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 @rem OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+set PATH=%PATH%;C:\Program Files\nodejs\;%APPDATA%\npm
 set JUNIT_REPORT_PATH=src\node\report.xml
 set JUNIT_REPORT_STACK=1
 .\node_modules\.bin\mocha.cmd --reporter mocha-jenkins-reporter --timeout 8000 src\node\test