ganeti-noded logging improvements
ganeti-noded logging improvements

The patch adds some more logging to the node daemon:

- log methods at beggining not only at the end
- log method parameters (they are very verbose, but useful)

A separate change is to initialize the global variable in the global
scope, not inside main().

Reviewed-by: imsnah

yiannist/ganeti,ganeti/ganeti,andir/ganeti,dimara/ganeti,ganeti-github-testing/ganeti-test-1,mbakke/ganeti,grnet/snf-ganeti,yiannist/ganeti,leshchevds/ganeti,apyrgio/snf-ganeti,bitemyapp/ganeti,grnet/snf-ganeti,ganeti/ganeti,andir/ganeti,apyrgio/ganeti,mbakke/ganeti,ganeti-github-testing/ganeti-test-1,leshchevds/ganeti,apyrgio/snf-ganeti,yiannist/ganeti,ganeti/ganeti,onponomarev/ganeti,leshchevds/ganeti,mbakke/ganeti,onponomarev/ganeti,andir/ganeti,bitemyapp/ganeti,dimara/ganeti,apyrgio/ganeti