Keep the current API and mirrors configuration but
use only the first mirror from the list for metadata
download.

Target files download remains unchanged.

Signed-off-by: Teodora Sechkova <tsechkova@vmware.com>

Updater now uses only a single url for metadata download.
Target files download use either a default url or an
optional one for each file passed by the caller.

Signed-off-by: Teodora Sechkova <tsechkova@vmware.com>

Signed-off-by: Jussi Kukkonen <jkukkonen@vmware.com>

Removing mirrors means we no longer need to do file object handling
manually.

Note that this means we're now exposing the Updater caller to all kinds
of new exceptions (as NoWorkingMirrorError is no longer an excuse we can
use).

Signed-off-by: Jussi Kukkonen <jkukkonen@vmware.com>

The function actually hashes the target filepath.

Signed-off-by: Jussi Kukkonen <jkukkonen@vmware.com>

Signed-off-by: Jussi Kukkonen <jkukkonen@vmware.com>

Signed-off-by: Jussi Kukkonen <jkukkonen@vmware.com>

* Make sure all base urls (prefixes) end in a slash
* Add documentation to get_one_valid_targetinfo(): That is the one place
  where the API accepts ill-defined "paths" from the caller
* Remove checks from download url handling: we control both the base url
  and the relative path so there should be no surprises here.

Signed-off-by: Jussi Kukkonen <jkukkonen@vmware.com>

Signed-off-by: Jussi Kukkonen <jkukkonen@vmware.com>

The test has issues like this alsready but let's not add more...

Signed-off-by: Jussi Kukkonen <jkukkonen@vmware.com>