Fix xar url again

(cherry picked from commit 3005442218bc1edbeb309cde746067b8f34ecde7)

packaging/Windows/defs/managed-components

@@ -17,7 +17,7 @@ download()
 {
 	mkdir -p ${REPODIR}
 	report "Downloading Xar"
-	wget --quiet -O ${REPODIR}/xar.tar.gz https://xamjenkinsartifact.blob.core.windows.net/jenkins-public/vm-provisioning/xar-1.6.1.tar.gz || error "*** Could not download Xar ***"
+	wget --quiet -O ${REPODIR}/xar.tar.gz https://xamjenkinsartifact.blob.core.windows.net/build-package-win-mono/xar-1.6.1.tar.gz || error "*** Could not download Xar ***"
 	report "Downloading x64 hostfxr.dll"
 	wget --quiet -O ${REPODIR}/hostfxr-x64.zip https://www.nuget.org/api/v2/package/runtime.win-x64.Microsoft.NETCore.DotNetHostResolver/2.0.0 || error "*** Could not download 64bit hostfxr.dll ***"
 	report "Downloading x86 hostfxr.dll"