* Added a default timeout of 180 seconds, and updated
anvil-configure-host to reduce this to 60 seconds while configuring
the host.
* Added a check for interfaces configured under a bond. If none are
found, the bond is ignored.
* Updated Storage->update_config() to take the new 'append' attribute to
allow adding a variable if it wasn't found already in the config.
* Added the new 'network::wait_for_bonds::timeout' variable to enable
changing the default timeout for Network->wait_for_bonds().
Signed-off-by: digimer <mkelly@alteeve.ca>
6a193bf710