Add hetzner password

This is not in group_vars or similar because we currently do not use it
in playbooks and it may not be the best idea to expose it that much.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

misc/hetzner-password.vault

+$ANSIBLE_VAULT;1.1;AES256
+63663934356235353633373636316462323265653331346663643937363865363038383863333632
+6566386434663834366139656337303330656362306565310a316263336265303562646630613565
+65393362613161326231396536396363366233333836623565386238313430393130623636613034
+6139636336303561650a383638663038666133653565303964373035336138366364353438633165
+37656539366130383031663865643662353439613834623139316631386165646639333731626433
+30306464333966663037653238666333303938376331636262346261613761373232396461353031
+64616236303135356430393930356633643161636264303437353635663061306266313566343765
+30383931613830306363646164313366303061393362613066653633623832333936303863333335
+66356338373637306464616536626165666531326136633764613664396163646633613032313435
+64666632323937333833343932666663666332346663353637303231656165323761353364393230
+353164313938343561306261346665313963