Model: do not throw error if we set an unmapped attribute
BosServer: do not use attribute servername, but

servernames[0].
Also adjust unmapped_attributes_list
BosServerLLAParse: ignore line "Auxiliary status..."

explictly.
Also use correct attribute start_date instead of started.
BosServer: fix more occurences of attribute servername
BosServerLLAParse: strip trailing comma from output
BosServerLLATest: add proper test for get_file_date

also call proper eval_methods for other tests
BosServerLLA: complete get_filedate

also fix test for it
BosServerLLA: fix test-evaluation of get_log
BaseLLA: initialize raw_result correctly.

up to now, an empty output file did not create
an entry in the dict raw_result. All entries
are required though.
BaseLLA: also print STDOUT on error

since some commands like e.g. bos adduser send the
error message there.
BosServerLLAParse: initialize BosServer.superusers

correctly as list before adding them.
On the instantiation the value is "None" which means
not set yet. An empty list means, there is no superuser.
BosServerLLA: restart-times

rename method names "push" to "set".
remove helper method to set both general and newbinary
restart times in one go.
It gets too messy in the async case.
BosServerLLA: remove helper method for setting all

attributes in BosServer-model.
It gets too messy in the async-case.
BosServer-model: fix spelling in comment
BosServerLLA: implement complete salvage

depending in the keywords given, it salvages
now the whole server, one partition or a single volume.

Also:
Use correct attribute for last exit when parsing bnode-output
BNOde-model: actually set attributes given to __init__
BNode-model: actually set attributes given to __init__
BosServerLLA: fix get_bnodes and tests

bnode.status is irrelevant for parsing.
fix startup/shutdown and start/stop bnode tests
BosServerLLA: make prune work with unittest
Merge pull request #105 from chanke/master

make BosServerLLA work