testing: Move collector.db in tnc/tnccs-20-ev-pt-tls scenario to /etc/db.d

Also move initialization to the pretest script (it's way faster in the
in-memory database).

testing/tests/tnc/tnccs-20-ev-pt-tls/pretest.dat

@@ -20,6 +20,7 @@ winnetou::ip route add 10.1.0.0/16 via 192.168.0.1
 dave::ip route add 10.1.0.0/16 via 192.168.0.1
 dave::cat /etc/pts/options
 dave::/usr/local/bin/pt-tls-client --optionsfrom /etc/pts/options
+carol::/usr/local/bin/init_collector
 carol::ip route add 10.1.0.0/16 via 192.168.0.1
 carol::cat /etc/pts/options
 carol::/usr/local/bin/pt-tls-client --optionsfrom /etc/pts/options