Merge remote-tracking branch 'etc-cvs-import/import-unbound-from-cvs-…

…and-etc'

Import Unbound configuration and `root.key` from `/etc`.

    $ ls -l --full-time /etc/unbound
    total 120
    -rw-r--r-- 1 root root   493 2014-12-18 14:51:57.000000000 +0100 root.key
    -rw-r--r-- 1 root root 24921 2016-11-02 13:45:11.000000000 +0100 unbound.conf
    -r--r--r-- 1 root root 25403 2016-11-02 13:44:38.000000000 +0100 unbound.conf,v
    -rw-r--r-- 1 root root 44051 2020-09-29 22:40:23.000000000 +0200 unbound.conf.sample
    -rw-r----- 1 root root  1277 2014-12-18 14:22:32.000000000 +0100 unbound_control.key
    -rw-r----- 1 root root   802 2014-12-18 14:22:32.000000000 +0100 unbound_control.pem
    -rw-r----- 1 root root  1277 2014-12-18 14:22:42.000000000 +0100 unbound_server.key
    -rw-r----- 1 root root   790 2014-12-18 14:22:42.000000000 +0100 unbound_server.pem

Also import the CVS history (only two commits).

misc_etc_files/unbound/root.key

@@ -0,0 +1 @@
+.	172800	IN	DNSKEY	257 3 8 AwEAAagAIKlVZrpC6Ia7gEzahOR+9W29euxhJhVVLOyQbSEW0O8gcCjFFVQUTf6v58fLjwBd0YI0EzrAcQqBGCzh/RStIoO8g0NfnfL2MTJRkxoXbfDaUeVPQuYEhg37NZWAJQ9VnMVDxP/VHL496M/QZxkjf5/Efucp2gaDX6RS6CXpoY68LsvPVjR0ZSwzz1apAzvN9dlzEheX7ICJBBtuA6G3LQpzW5hOA2hzCTMjJPJ8LbqF6dsV6DoBQzgul0sGIcGOYl7OyQdXfZ57relSQageu+ipAdTTJ25AsRTAoub8ONGcLmqrAmRLKBP1dfwhYB4N7knNnulqQxA+Uk1ihz0= ;{id = 19036 (ksk), size = 2048b} ;;state=2 [  VALID  ] ;;count=0 ;;lastchange=1418892894 ;;Thu Dec 18 09:54:54 2014