For prerotate, logrotate, firstaction and lastaction
is very common to need several lines of commands, making
it difficult to pass with a puppet string.
Allow this parameter to be either and string or an array
to allow this usage.
Change-Id: I7451ecc550b50b85c55784ef598f6b45412117fc
Non instance variable representation is deprecated
so needs to be changed. This change changes varibles
to their instance variable representation.
See more details see:
http://docs.puppetlabs.com/guides/templating.html
Change-Id: Ib77827e01011ef6c0380c9ec7a9d147eafd8ce2f