ddns-scripts: Use https for domains.google.com
Without https the update fails with:
```
132954 : #> /usr/bin/curl -RsS -o /var/run/ddns/myddns_ipv4.dat --stderr /var/run/ddns/myddns_ipv4.err --noproxy '*' 'http://CENSORED:***PW***@domains.google.com/nic/update?hostname=CENSORED&myip=CENSORED'
132954 : DDNS Provider answered:
<HTML>
<HEAD>
<TITLE>Moved Temporarily</TITLE>
</HEAD>
<BODY BGCOLOR="#FFFFFF" TEXT="#000000">
<H1>Moved Temporarily</H1>
The document has moved <A HREF="https://domains.google.com/nic/update?hostname=CENSORED&myip=CENSORED">here</A>.
</BODY>
</HTML>
132954 ERROR : IP update not accepted by DDNS Provider
```
Signed-off-by: Paul Tobias <tobias.pal@gmail.com>