fix(packaging): move templates/ into decnet/ package so they ship with pip install

The docker build contexts and syslog_bridge.py lived at repo root, which
meant setuptools (include = ["decnet*"]) never shipped them. Agents
installed via `pip install $RELEASE_DIR` got site-packages/decnet/** but no
templates/, so every deploy blew up in deployer._sync_logging_helper with
FileNotFoundError on templates/syslog_bridge.py.

Move templates/ -> decnet/templates/ and declare it as setuptools
package-data. Path resolutions in services/*.py and engine/deployer.py drop
one .parent since templates now lives beside the code. Test fixtures,
bandit exclude path, and coverage omit glob updated to match.

decnet/templates/cowrie/honeyfs/etc/passwd

@@ -0,0 +1,36 @@
+root:x:0:0:root:/root:/bin/bash
+daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
+bin:x:2:2:bin:/bin:/usr/sbin/nologin
+sys:x:3:3:sys:/dev:/usr/sbin/nologin
+sync:x:4:65534:sync:/bin:/bin/sync
+games:x:5:60:games:/usr/games:/usr/sbin/nologin
+man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
+lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin
+mail:x:8:8:mail:/var/mail:/usr/sbin/nologin
+news:x:9:9:news:/var/spool/news:/usr/sbin/nologin
+uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin
+proxy:x:13:13:proxy:/bin:/usr/sbin/nologin
+www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
+backup:x:34:34:backup:/var/backups:/usr/sbin/nologin
+list:x:38:38:Mailing List Manager:/var/list:/usr/sbin/nologin
+irc:x:39:39:ircd:/run/ircd:/usr/sbin/nologin
+gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin
+nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin
+systemd-network:x:100:102:systemd Network Management,,,:/run/systemd:/usr/sbin/nologin
+systemd-resolve:x:101:103:systemd Resolver,,,:/run/systemd:/usr/sbin/nologin
+messagebus:x:102:105::/nonexistent:/usr/sbin/nologin
+systemd-timesync:x:103:106:systemd Time Synchronization,,,:/run/systemd:/usr/sbin/nologin
+syslog:x:104:110::/home/syslog:/usr/sbin/nologin
+_apt:x:105:65534::/nonexistent:/usr/sbin/nologin
+tss:x:106:111:TPM software stack,,,:/var/lib/tpm:/bin/false
+uuidd:x:107:112::/run/uuidd:/usr/sbin/nologin
+tcpdump:x:108:113::/nonexistent:/usr/sbin/nologin
+landscape:x:109:115::/var/lib/landscape:/usr/sbin/nologin
+pollinate:x:110:1::/var/cache/pollinate:/bin/false
+fwupd-refresh:x:111:116:fwupd-refresh user,,,:/run/systemd:/usr/sbin/nologin
+usbmux:x:112:46:usbmux daemon,,,:/var/lib/usbmux:/usr/sbin/nologin
+sshd:x:113:65534::/run/sshd:/usr/sbin/nologin
+systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
+lxd:x:998:100::/var/snap/lxd/common/lxd:/bin/false
+mysql:x:114:119:MySQL Server,,,:/nonexistent:/bin/false
+admin:x:1000:1000:Admin User,,,:/home/admin:/bin/bash