Make vdsClient prettyprint dictionaries.

This helps a lot reading getVdsCaps.

This change makes that something like this:

networks = {'ovirtmgmt': {'iface': 'ovirtmgmt', 'addr': '10.34.60.86', 'cfg': {'IPV6INIT': 'yes', 'MTU': '1500', 'DELAY': '0', 'NM_CONTROLLED': 'no', 'BOOTPROTO': 'dhcp', 'DEVICE': 'ovirtmgmt', 'TYPE': 'Bridge', 'ONBOOT': 'yes'}, 'ipv6addrs': ['fe80::5054:ff:fe68:2557/64'], 'mtu': '1500', 'netmask': '255.255.252.0', 'stp': 'off', 'bridged': True, 'ipv6gateway': '::', 'gateway': '10.34.63.254', 'ports': ['eth0']}}

Becomes this:

networks = {'ovirtmgmt': {'addr': '10.34.60.86',
                          'bridged': True,
                          'cfg': {'BOOTPROTO': 'dhcp',
                                  'DELAY': '0',
                                  'DEVICE': 'ovirtmgmt',
                                  'IPV6INIT': 'yes',
                                  'MTU': '1500',
                                  'NM_CONTROLLED': 'no',
                                  'ONBOOT': 'yes',
                                  'TYPE': 'Bridge'},
                          'gateway': '10.34.63.254',
                          'iface': 'ovirtmgmt',
                          'ipv6addrs': ['fe80::5054:ff:fe68:2557/64'],
                          'ipv6gateway': '::',
                          'mtu': '1500',
                          'netmask': '255.255.252.0',
                          'ports': ['eth0'],
                          'stp': 'off'}}

Change-Id: I2553f4d8bfd85692b5204c67db8eca85517b1041
Signed-off-by: Antoni S. Puimedon <asegurap@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/11979
Reviewed-by: Igor Lvovsky <ilvovsky@redhat.com>
Reviewed-by: Vinzenz Feenstra <vfeenstr@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>
Tested-by: Dan Kenigsberg <danken@redhat.com>