sysctl returning hash to file

/etc/sysctl.d/50-chef-attributes-params.conf is affected.

This new fix removes dependencies to external cookbook sysctl.
Instead it uses the existing template in the common cookbook
and adds params for object-storage from there.

added tests for new attributes

Change-Id: Ib8d18b8771ad2d2cb382a7f56bec501c7455a43d
Closes-Bug: 1282673