Add an optional caps ("capabilities") argument to the constructor of
SSHClient. It is meant to be used by derived classes in order to
declare that they don't want the base class to handle a default
behaviour for a certain capability, but that they want to implement
it themselves instead.
Also, give the _run_ssh() callbacks the necessary info as parameters,
so that the derived classes have the means to do so.
Signed-off-by: Jan Lindemann <jan@janware.com>
Move the code of SSHClientInternal and SSCClientCmd into lib.ec.ssh,
as "Paramiko" and "Exec", respectively. This makes the class layout
a little more modular, and along the way fixes a bug where
SSHClientInternal could be instantiated but was unusable (if the
Paramiko is not installed).
Signed-off-by: Jan Lindemann <jan@janware.com>
