ovf: pass arbitrary kwargs to ConfigParser
ovf: pass arbitrary kwargs to ConfigParser

Our ConfigParserWithDefaults overrides ConfigParser's get and getint,
hardcoding all positional and keyword arguments. These methods are also
used internally by the ConfigParser implementation, so they should
accept the same arguments as the original ConfigParser methods.

ConfigParser in Python 3.2 introduced the new 'fallback=' keyword
argument, which it also uses in internal calls to get(). Rather than
reflect the change itself, make our own definitions more future-proof by
allowing arbitrary kwargs and passing them down to ConfigParser
unaltered.

Signed-off-by: Apollon Oikonomopoulos <ed81ed0a45ccd5c8869bda52e38353a6299ee39e@dmesg.gr>

ganeti/ganeti,mbakke/ganeti,ganeti/ganeti,ganeti/ganeti,mbakke/ganeti,mbakke/ganeti