TT#72351 Add missing dependencies

These are used by the tests themselves. We distinguish between core
and system dependencies for functionality we really want to check
which goes into Depends, and dependencies for stacks that are optional
and their missing presence will still emit an error due to the commands
not being available, these we add as Suggests.

Change-Id: I051dd388dab0a4a5c5f51f48dda54013298ba537

debian/control

@@ -11,9 +11,17 @@ Package: ngcp-system-tests
 Architecture: all
 Depends:
  curl,
+ iproute2,
+ kmod,
  net-tools,
  procps,
  ${misc:Depends},
+Suggests:
+ asterisk,
+ influxdb-client,
+ mariadb-server,
+ snmp,
+ sqlite3,
 Description: run system tests against NGCP systems
  This package provides test scripts to check the system
  state of the SIP based Open Source Class5 VoIP soft-switch platform