writing convention: do not use “-y” for package install
writing convention: do not use “-y” for package install

refer to:
https://docs.openstack.org/contributor-guide/writing-style/ \
code-conventions.html

Change-Id: I7d4bbbe3a15a2793b7b398f6ee7c2a0b9e72caa5

openstack/designate,openstack/designate,openstack/designate