Do not use “-y” for package install
Do not use “-y” for package install

According to "code conventions" [1], do not use "-y" option.
Instead, use apt-get install package, yum install package,
or zypper install package.

[1] https://docs.openstack.org/doc-contrib-guide/writing-style/
code-conventions.html

Change-Id: I58d11d0bb8976941ceda56a95112783090d211bf

openstack/zaqar,openstack/zaqar,openstack/zaqar,openstack/zaqar