Juniper/contrail-packages — pull request #100 by sbadia (2014-05-19 08:04:26+00:00)
Title: contrail: Switch zookeeper and cassandra from suggest to recommends

Recommends
This declares a strong, but not absolute, dependency.
The Recommends field should list packages that would be found
together with this one in all but unusual installations.

Suggests
This is used to declare that one package may be more useful with one
or more others. Using this field tells the packaging system and the user
that the listed packages are related to this one and can perhaps enhance
its usefulness, but that installing this one without them is perfectly
reasonable.

From https://www.debian.org/doc/debian-policy/ch-relationships.html