kiel: Rename kiel2 to kiel3, remove old kiel3.

The former Kiel3 host is going to be dropped, since the host known
as kiel2 is locally known as vpn3 it is sound for our numbering scheme
to rename it in this way.
kiel: The private keys of kiel4 are lost.

Furthermore the host is no longer available.
kiel: Update dynamic domain name
Merge pull request #31 from sargon/master

kiel: Cleanup of keys.
rewrite post-merge to auto-generate tinc config
add darmstadt1
Added darmstadt2
Merge remote-tracking branch 'ffda/master'
Merge pull request #33 from freifunk-darmstadt/master

Add darmstadt1/darmstadt2
refactor post-merge hook
Merge branch 'frosty-geek-feature_auto_conf'
kiel: Remove kiel1

The system is no longer acting as a icvpn peer
Merge pull request #34 from sargon/master

kiel: Remove kiel1
add braunschweig[12]
Merge pull request #35 from ffbs/master

add braunschweig[12]
Merge pull request #29 from jplitza/master

removed aurich
muenchen added
Merge pull request #36 from lephisto/master

muenchen added
muenchen4 added
Create erfurt1