(doc) Document acceptance test dependency on wget

Acceptance tests of pre-built packages relies on having a local
installation of wget on the system where you're running the rake task.
This comment explicitly mentions that, as the error message that wget
failed isn't completely obvious where it occured.
Merge pull request #3313 from MikaelSmith/docs/master/acceptance-wget-dependency

(doc) Document acceptance test dependency on wget
(PUP-3388) Differentiate between single and multi mirror and raidz pools

Previously, the acceptance test attempted to create a single mirrored
pool with 3 virtual devices, and a single raidz with 3 virtual devices.
The syntax does not match the type specification, which says:

    List of all the devices to mirror for this pool. Each mirror should be a
    space separated string.

And the same thing for raidz.

This commit modifies the acceptance test so that it uses valid mirror
and raidz syntax. It can either be a single pool with multiple devices,
e.g. mirror => ['a b'], or multiple pools each with multiple devices,
e.g. mirror => ['a b', 'c d'].
Merge pull request #3314 from joshcooper/ticket/master/PUP-3388-zpool-acceptance

(PUP-3388) Differentiate between single and multi mirror and raidz pools
(maint) Use Ruby 1.9 for Solaris acceptance tests

Prior to this commit, pre_suite for Solaris templates would install Ruby
1.8. This commit installs Ruby 1.9.3 on our Solaris 10 and 11 templates
as part of the Ruby 1.8.7 deprecation in Puppet 4.0.
Merge pull request #3317 from rji/maint/master/solaris-use-ruby19

(maint) Use Ruby 1.9 for Solaris acceptance tests