ansible: fix and simply ccache version getter

[maclover7]

@rvagg This was what I meant in #1277 -- for some reason the awk script doesn't work on my Mac, and this will help to simplify what we're actually trying to do here

[LucaLanziani]

One issue I can see with this, if I'm reading the code correctly, is that we are assuming that the moment the tag is in GitHub the tar.gz is already in the "samba ftp" endpoint.

[refack]

How about splitting this to:

1. A script that fetches whatever version and stores it in a known location (e.g. www/downloads)
2. Ansible can always fetch from known location.

[LucaLanziani]

@refack would the script fetch the version on every run?

At the end I've decided to push my version too #1312 ;)

[refack]

refack would the script fetch the version on every run?

That's an interesting question, since we don't have a defined schedule for updates. I'd say a fetch script could be manually triggered, and ansible stays the same.

But I saw 1312, and if it's that simple it's better.

P.S. only issue we might have is that some machines have old openSSL and have trouble reaching https hosts, so we might need to cache stuff on www/downloads.

[rvagg]

oh, whoops, this must work for me because I have coreutils installed on my mac and they are the default executables so it's consistent between my mac and linux machines. +1 on whatever works.

[maclover7]

Closing in favor of #1312