msi: Use openvpnserv2 binary from GitHub releases

Signed-off-by: Lev Stipakov <lev@openvpn.net>

Author: lstipakov

windows-msi/build.wsf

@@ -136,7 +136,7 @@ clean	Cleans intermediate and output files</example>
                     // Downloading openvpnserv2.exe
                     b.pushRule(new DownloadBuildRule(
                         BuildPath(buildPath, "openvpnserv2.exe"),
-                        ver.define.OPENVPNSERV2_URL,
+                        "https://github.com/OpenVPN/openvpnserv2/releases/download/" + ver.define.OVPNSERV2_VERSION + "/openvpnserv2-" + ver.define.OVPNSERV2_VERSION +".exe",
                         ["version.m4"]));
 
                     // Downloading and extracting Easy RSA

windows-msi/version.m4

@@ -21,7 +21,8 @@ dnl renovate: datasource=github-releases depName=OpenVPN/ovpn-dco-win
 define([PRODUCT_OVPN_DCO_VERSION],     [2.5.6])
 
 dnl OpenVPNServ2.exe binary
-define([OPENVPNSERV2_URL], [http://build.openvpn.net/downloads/releases/openvpnserv2-1.4.0.1.exe])
+dnl renovate: datasource=github-releases depName=OpenVPN/openvpnserv2
+define([OVPNSERV2_VERSION], [1.4.0.1])
 
 dnl Easy-RSA binaries:
 dnl URL to .zip file containing "easy-rsa-[EASYRSA_VERSION]" folder with Easy-RSA.