make grob-client calls generic
Currently borg_pull_tcp
has create hardcoded. Change that so arbitrary borg commands can be executed. This would support e.g. to run info to create a client cache, to realize manual cache disabling, see #32
Currently borg_pull_tcp
has create hardcoded. Change that so arbitrary borg commands can be executed. This would support e.g. to run info to create a client cache, to realize manual cache disabling, see #32