refactor(ssh): consolidate real_ssh into ssh, remove duplication

real_ssh was a separate service name pointing to the same template and
behaviour as ssh. Merged them: ssh is now the single real-OpenSSH service.

- Rename templates/real_ssh/ → templates/ssh/
- Remove decnet/services/real_ssh.py
- Deaddeck archetype updated: services=["ssh"]
- Merge test_real_ssh.py into test_ssh.py (includes deaddeck + logging tests)
- Drop decnet.services.real_ssh from test_build module list

templates/cowrie/honeyfs/etc/group

@@ -0,0 +1,62 @@
+root:x:0:
+daemon:x:1:
+bin:x:2:
+sys:x:3:
+adm:x:4:syslog,admin
+tty:x:5:
+disk:x:6:
+lp:x:7:
+mail:x:8:
+news:x:9:
+uucp:x:10:
+man:x:12:
+proxy:x:13:
+kmem:x:15:
+dialout:x:20:
+fax:x:21:
+voice:x:22:
+cdrom:x:24:admin
+floppy:x:25:
+tape:x:26:
+sudo:x:27:admin
+audio:x:29:
+dip:x:30:admin
+www-data:x:33:
+backup:x:34:
+operator:x:37:
+list:x:38:
+irc:x:39:
+src:x:40:
+gnats:x:41:
+shadow:x:42:
+utmp:x:43:
+video:x:44:
+sasl:x:45:
+plugdev:x:46:admin
+staff:x:50:
+games:x:60:
+users:x:100:
+nogroup:x:65534:
+systemd-journal:x:101:
+systemd-network:x:102:
+systemd-resolve:x:103:
+crontab:x:104:
+messagebus:x:105:
+systemd-timesync:x:106:
+input:x:107:
+sgx:x:108:
+kvm:x:109:
+render:x:110:
+syslog:x:110:
+tss:x:111:
+uuidd:x:112:
+tcpdump:x:113:
+ssl-cert:x:114:
+landscape:x:115:
+fwupd-refresh:x:116:
+usbmux:x:46:
+lxd:x:117:admin
+systemd-coredump:x:999:
+mysql:x:119:
+netdev:x:120:admin
+admin:x:1000: