[Libvir] [PATCH] add no_tty flag for ssh

[Richard W.M. Jones]

This patch adds an extra no_tty=1 flag to the connection URI.  This 
stops ssh from asking for a password if it can't log in automatically. 
Typical use-case for this is in graphical programs where if ssh asks for 
a password it would cause the GUI program to hang.

Example:

$ virsh -c xen+ssh://xxx/ list
rjones at xxx's password:
Permission denied, please try again.
rjones at xxx's password:
Permission denied, please try again.
rjones at xxx's password:
Permission denied (publickey,gssapi-with-mic,password).
libvir: Remote error : Connection reset by peer
error: failed to connect to the hypervisor
error: no valid connection

$ virsh -c xen+ssh://xxx/?no_tty=1 list
Permission denied (publickey,gssapi-with-mic,password).
libvir: Remote error : Connection reset by peer
error: failed to connect to the hypervisor
error: no valid connection


Rich.

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