I am on dCore-xenial and have imported connman with the repos you listed above.
If I issue "pgrep connmand" get a pid for it with no other action.
jason@box:~$ pgrep connmand
And if as a user I try "connmand -n" I get the following though it is running:
jason@box:~$ connmand -n
Connection ":1.4" is not allowed to own the service "net.connman" due to security policies in the configuration file
As for a startup script in /usr/local/tce.installed, if a package has no postinst file in it's control.tar.gz, it does not creat a /usr/local/postinst or /usr/local/tce.installed entry, such is the case with iptables.