vcluster-setup: Create $vnode/etc/ganeti directory
vcluster-setup: Create $vnode/etc/ganeti directory

This directory is required by “cfgupgrade” and some other tools.

Signed-off-by: Michael Hanselmann <68b67885ff74281219b4a4be33cc20fd45078d7c@google.com>
Reviewed-by: Michele Tartara <05f7077a2c6cbbdc4af4ba42e3ef89a0df846179@google.com>

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