templates/iiab-remoteit: Warn if /etc/remoteit/config.json exists...and try it?

roles/remoteit/templates/iiab-remoteit

@@ -50,6 +50,28 @@ fi
 
 echo -e "\nThis IIAB must be online to begin!\n"
 
+if [ -f /etc/remoteit/config.json ]; then
+    echo -en "For fresh registration let's remove /etc/remoteit/config.json, Ok? [Y/n] "
+    read -n 1 -r ans < /dev/tty    # Prompt for a single character
+    echo; echo
+
+    if [[ $ans != "y" && $ans != "Y" ]]; then
+        echo -e "Let's try to enable remote.it, with your existing /etc/remoteit/config.json...\n"
+
+        systemctl enable connectd
+        systemctl restart connectd
+        systemctl enable schannel
+
+        if grep -q '^remoteit_enabled:' /etc/iiab/local_vars.yml; then
+            sed -i "s/^remoteit_enabled:.*/remoteit_enabled: True/" /etc/iiab/local_vars.yml
+        else
+            echo "remoteit_enabled: True" >> /etc/iiab/local_vars.yml
+        fi
+
+        exit 0
+    fi
+fi
+
 echo -en "\e[1mOptionally purge + install latest remote.it Device Package? [y/N]\e[0m "
 read -n 1 -r ans < /dev/tty    # Prompt for a single character
 echo; echo