Added default value of -1 for all logrotate attributes

You don't need to specify all logrotate explicitely as -1 if you don't want to manage them.
Jenkins will automatically populate them as -1 if you don't enter any value.

Change-Id: Id9ee223d94e2c43cd0a1c1f5547a25858873ed92
Merge "Added default value of -1 for all logrotate attributes"