(PUP-2628) Add members to groups instead of full list for Windows

Previously, if you wanted to use the group resource you needed to specify the
entire list of members as the windows provider ignored the auth_membership
setting and was always the authoritative list. This ensures that the windows
provider respects the auth_membership setting.
(PUP-3624) Refactor log setup

Previously, the cert, doc, and face based applications had the same
logic for checking if `--verbose` or `--debug` was specified on the
command line, and setting the log level appropriately.

This commit refactors those applications to just call the
`Puppet::Application#set_log_level` method instead. The doc application is
a little bit unique in that it changes the default log level from
`notice` to `warning`, and it explicitly sets a console log destination.
(PUP-3624) Log at least at info level when --verbose is specified

The change for PUP-2998 means if you have `log_level=debug` in your
puppet.conf, then `puppet agent --test` will reduce the log level to info,
because `--test` implies `--verbose`.

This commit changes the semantics of `--verbose` (and `--test`) so that
we log *at least* at that level, but we won't downgrade.  This affects
all Puppet::Applications, e.g. puppet apply, agent, etc.

Note this wasn't an issue before PUP-2998 was implemented, because
log_levels could only be specified on the command line.
(maint) Add rdoc dependency in Gemfile

Without this patch the Puppet spec tests fail to run using the system
ruby included with Enterprise Linux 7.  This is a problem because EL7 is
a supported platform and it is helpful to use the system packages to run
the Puppet spec tests.

The specific issue is the following from a jenkins job that simply runs
`bundle install --path .bundle/gems` and then `bundle exec rspec spec`.

    + bundle exec rspec spec -fd
    /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/activesupport-3.2.19/lib/active_support/dependencies.rb:251:in `require': cannot load such file -- rdoc/rdoc (LoadError)
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/activesupport-3.2.19/lib/active_support/dependencies.rb:251:in `block in require'
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/activesupport-3.2.19/lib/active_support/dependencies.rb:236:in `load_dependency'
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/activesupport-3.2.19/lib/active_support/dependencies.rb:251:in `require'
            from /var/lib/jenkins/jobs/puppet/workspace/spec/unit/util/rdoc_spec.rb:5:in `<top (required)>'
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/rspec-core-2.14.8/lib/rspec/core/configuration.rb:896:in `load'
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/rspec-core-2.14.8/lib/rspec/core/configuration.rb:896:in `block in load_spec_files'
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/rspec-core-2.14.8/lib/rspec/core/configuration.rb:896:in `each'
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/rspec-core-2.14.8/lib/rspec/core/configuration.rb:896:in `load_spec_files'
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/rspec-core-2.14.8/lib/rspec/core/command_line.rb:22:in `run'
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/rspec-core-2.14.8/lib/rspec/core/runner.rb:80:in `run'
            from /var/lib/jenkins/jobs/puppet/workspace/.bundle/gems/ruby/gems/rspec-core-2.14.8/lib/rspec/core/runner.rb:17:in `block in autorun'

This patch addresses the problem by adding 'rdoc' to the set of
dependencies managed by bundler as a pre-requisite step prior to running
the spec tests.
Merge pull request #3324 from ferventcoder/ticket/master/PUP-2628-group-windows-inclusive

(PUP-2628) Add members to groups instead of full list for Windows
Merge pull request #3346 from joshcooper/ticket/master/PUP-3624_log_at_least_debug

(PUP-3624) Log at least at info level when --verbose is specified
Merge pull request #3104 from jeffmccune/rdoc

(maint) Add rdoc dependency in Gemfile