#3 Make mln wait for a project to shut down

[Kyrre Begnum]

A new option -w will tell MLN to monitor and wait for all the virtual
machines to shut down properly. This is for when one wants to
reboot the physical machine.

Some of this is already done un the upgrade function, where MLN
waits before it begins to modify the VM in question.

Also, in order for MLN not to wait forever on hanging VMs, one
should also issue a -T [seconds] which dictates how long MLN
should wait for the project to finish. If some hosts still are up after
[seconds] have elapsed, a stronger kill is sent causing an ungraceful
shutdown.

The exit variable of MLN should be 0 if the project shut down and 1
if it had to kill it after a timeout. Perhaps 2 if the project is down
aldready.

[Kyrre Begnum]

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there are two functions:

sub chackIfUp

and

sub checkIfAnyAreUp

They might be of help