Tidying

src/freedombone-app-vpn

     cd /etc/openvpn/easy-rsa
     . ./vars
     ./clean-all
-    if [ ! -f openssl-1.0.0.cnf ]; then
-        echo $'openssl-1.0.0.cnf was not found'
+    vpn_openssl_version='1.0.0'
+    if [ ! -f openssl-${vpn_openssl_version}.cnf ]; then
+        echo $"openssl-${vpn_openssl_version}.cnf was not found"
         exit 7392353
     fi
-    cp openssl-1.0.0.cnf openssl.cnf
+    cp openssl-${vpn_openssl_version}.cnf openssl.cnf
     echo '