Rename solution files to referece VS2017

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
diff --git a/scripts/windows_msbuild.bat b/scripts/windows_msbuild.bat
index ff2b9f2..2bc6a51 100644
--- a/scripts/windows_msbuild.bat
+++ b/scripts/windows_msbuild.bat
@@ -14,7 +14,7 @@
 @rem vcvarsall.bat will silently change the directory to that directory.

 @rem Setting the VSCMD_START_DIR environment variable causes it to change

 @rem to that directory instead.

-set "VSCMD_START_DIR=%~dp0\..\visualc\VS2013"

+set "VSCMD_START_DIR=%~dp0\..\visualc\VS2017"

 

 "%vcvarsall%" x64 && ^

 msbuild /t:Rebuild /p:Configuration=%cfg%%retarget% /m mbedTLS.sln