Add option to configure number of service ports in networks

Some services like portprober agent cannot be disabled via api,
so in tests like ip availability tests they should be explicitly
skipped from calculations.

Related-Prod: https://mirantis.jira.com/browse/PRODX-42203
Change-Id: I089bc013188079289914d98fd24cbfd3c4d91530
(cherry picked from commit ada996317cff04955f0c4bbc60c4e600689936f4)
1 file changed