updates for netbsd 8.1 and bhyve
network restart is in hostname script as well.
minor fix for grabbing interface names. also ensure that new interfaces get brought up.
prepared images for 6.1.5 and 7.1 and verified guest tools work properly.
Merge pull request #3 from sean-/triton-rcorder
Change the rcorder(8) of `rc.d/triton` to start before `SERVERS`.
Change the rcorder(8) of `rc.d/triton` to start before `SERVERS`.
Previously it was possible for local servers to start before the
triton init script had formatted the data partition. Now `triton`
starts before `SERVERS` and is guaranteed to start after `NETWORKING`.
As seen by `rcorder /etc/rc.d/* | cat -n`:
before:
```
107 /etc/rc.d/DAEMON
108 /etc/rc.d/utx
109 /etc/rc.d/ugidfw
110 /etc/rc.d/ubthidhci
111 /etc/rc.d/triton
112 /etc/rc.d/timed
113 /etc/rc.d/apm
114 /etc/rc.d/apmd
115 /etc/rc.d/bootparams
116 /etc/rc.d/hcsecd
117 /etc/rc.d/bthidd
118 /etc/rc.d/local
119 /etc/rc.d/lpd
120 /etc/rc.d/motd
121 /etc/rc.d/mountlate
122 /etc/rc.d/nscd
123 /etc/rc.d/ntpd
124 /etc/rc.d/powerd
125 /etc/rc.d/rarpd
126 /etc/rc.d/rctl
127 /etc/rc.d/sdpd
128 /etc/rc.d/rfcomm_pppd_server
129 /etc/rc.d/rtadvd
130 /etc/rc.d/rwho
131 /etc/rc.d/LOGIN
```
after:
```
59 /etc/rc.d/NETWORKING
60 /etc/rc.d/mountcritremote
61 /etc/rc.d/newsyslog
62 /etc/rc.d/syslogd
63 /etc/rc.d/ntpdate
64 /etc/rc.d/rpcbind
65 /etc/rc.d/devfs
66 /etc/rc.d/ipmon
67 /etc/rc.d/kdc
68 /etc/rc.d/mdconfig2
69 /etc/rc.d/triton
70 /etc/rc.d/watchdogd
71 /etc/rc.d/savecore
72 /etc/rc.d/archdep
73 /etc/rc.d/abi
74 /etc/rc.d/SERVERS
```
Check TRACE before we `set -u`
make debug tracing an option