Convert approvals value to string for output

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Convert from optparse to argparse

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Explicitly pass in argv to commands

Instead of assuming use of sys.argv, explicitly pass argv
into commands.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Add missing import of 're' module for file matching

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Switch over to a multi-command script

Instead of having a separate script for each command, use a
single script and define sub-commands. Also get rid of the
'--profile' flag and instead all the config file to define
new subcommands

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Add a better README file describing usage

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>