oci-cli: Add missing dependencies

oci-cli: Add missing dependencies

Since the last update, the OCI CLI package requires some extra Python
dependenices. I find it very annoying that Python won't check this
during build time, so I added an extra step where we will run "oci
--help" and see if the command is coming up at all. Hopefully that will
be sufficient any no further Python modules will be loaded whenever they
are needed.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>