confd: start in polling mode
confd: start in polling mode

This allows us not to enable the inotify handler immediately, and thus
to make it easier for us should the config file not exist at all.

Signed-off-by: Guido Trotter <f62ca4d5358bdaeef0e50e57f9f7e231de63727e@google.com>
Reviewed-by: Iustin Pop <acf83a5274f31a43af6b914614365999469c1a31@google.com>

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