apache-libcloud enables uploading to basically any cloud storage service.
This is the first implementation that allows `fdroid server` to push a repo
up to a AWS S3 'bucket'. Supporting other cloud storage services should
mostly be a matter of finding the libcloud "Provider" and setting the
access creditials.
fixes#3137https://dev.guardianproject.info/issues/3137
Having serverwebroot optional in `fdroid server` means that it can support
multiple methods of hosting, like cloud storage services. `fdroid server`
can also then support multiple repo hosting options at the same time.
These options are needed to configure Java's keytool and jarsigner to use
a Hardware Security Module aka HSM aka smartcard. The defaults provided
are meant to make things work as easily as possible.
This also makes the file layout in git basically the same as the installed
file layout, using an examples/ dir. I'm not sure if config.buildserver.py
is an example conf file, or a conf file that is actually in use, so I did
not move it.
