bin/ovpn_initpki: Touch vars file before init-pki

EasyRSA 3.0.7 introduces a check for the existence of vars in the
vars_setup() function. '$ easyrsa init-pki' fails without first
creating the file. See https://github.com/OpenVPN/easy-rsa/commit/
abaa2f57b48e218ac58ee6dc793f178aada31f82#diff-231cb43897d7aa2a98df
da5720c2b40f for the exact change.

Author: cdabella

bin/ovpn_initpki

@@ -15,6 +15,10 @@ source "$OPENVPN/ovpn_env.sh"
 # Specify "nopass" as arg[2] to make the CA insecure (not recommended!)
 nopass=$1
 
+# EasyRSA 3.0.7 introduced checks for $EASYRSA_VARS_FILE existence
+# in the init-pki script
+touch $EASYRSA_VARS_FILE
+
 # Provides a sufficient warning before erasing pre-existing files
 easyrsa init-pki