(2.12) Add TAP interface name as argument in '_OpenTap'
(2.12) Add TAP interface name as argument in '_OpenTap'

This is necessary in order to create TAP interfaces for the
communication mechanism, which are named 'gnt.com.%d', where '%d' is a
unique number within a given node.

Signed-off-by: Jose A. Lopes <0fb9c4f8511df4ec2ae28af879e9d462f6218a2c@google.com>
Reviewed-by: Michele Tartara <05f7077a2c6cbbdc4af4ba42e3ef89a0df846179@google.com>

apyrgio/snf-ganeti,apyrgio/snf-ganeti