mailpile cert permissions

src/freedombone-app-mailpile

         mv /etc/ssl/certs/${MAILPILE_DOMAIN_NAME}.crt /etc/ssl/certs/${MAILPILE_DOMAIN_NAME}.pem
     fi
     if [ -f /etc/ssl/certs/${MAILPILE_DOMAIN_NAME}.pem ]; then
-        chown mailpile: /etc/ssl/certs/${MAILPILE_DOMAIN_NAME}.pem
+        chown root:root /etc/ssl/certs/${MAILPILE_DOMAIN_NAME}.pem
         sed -i "s|.crt|.pem|g" /etc/nginx/sites-available/${MAILPILE_DOMAIN_NAME}
     fi
     if [ -f /etc/ssl/private/${MAILPILE_DOMAIN_NAME}.key ]; then
-        chown mailpile: /etc/ssl/private/${MAILPILE_DOMAIN_NAME}.key
+        chown root:root /etc/ssl/private/${MAILPILE_DOMAIN_NAME}.key
     fi
 
     function_check nginx_ensite