(maint) Simplify the CA use of the autosign setting

Commit bca628dc adds proper conversion of autosign input values to
booleans, but Puppet::SSL::CertificateAuthority was still trying to
handle string values. This commit simplifies the checking logic and lets
the autosign setting handle data normalization.
(#PUP-1046) Add spec test for skeleton for generated modules

This patch adds a simple spec test to ensure that by including the
class with default values for all the parameters, that the class is
contained within the catalog.
(#FORGE-38) Add Rakefile to skeleton for generated modules

This patch adds a simple Rakefile that provides rake tasks `lint` for
puppet-lint, `validate` for validation of manifests, templates, and ruby
files, and the tasks provided by the puppetlabs_spec_helper.
(PUP-1586) allow managing existing cronjobs without caring for command

When the catalog contains a cron resource that does not specify a value
for the command property, the transaction would fail with the cryptic
error message 'no command, somehow' under certain conditions.

This error is spurious. Generally, it's quite allowable to manage a subset
of cron properties that does not include the command. Fixed by removing
the devfail invocation. The command property is now handled just like
the 'special' property.
(PUP-1586) remove obsolete unit test

The cron type unit test titled "it should require a command when adding
a new entry" did not quite do what it said. What it actually tested was
that the type would raise an exception when an empty command should-value
was accessed.

This can be safely removed, as PUP-1587 will implement a more sensible
protection against the creation of cronjobs that lack a command, including
a working integration test.
(PUP-1587) crontab: make sure that invalid crontabs aren't written out

It is permissible to manage cron entries and not manage the command
property. However, if the entry doesn't exist on the target system yet,
puppet should not try to create it.

In other words, a cron resource without a should value for the command
property can only be synced to a valid state if the corresponding resource
on the target system has a valid command value already.

cron { "foo": minute => 1 }

is alright with an existing crontab of

 # Puppet Name: foo
 * * * * * /some/command

but not with a crontab not yet containing the entry named 'foo'.

This change prevents the sync operation in the error scenario.
(PUP-1879) Clear gem path cache when loading library features

Installing gems during a Puppet run should be picked up by features using the
'libs' option.  However gems are installed into separate directories, so
rubygems maintains an in-memory directory cache, which needs invalidating
when attempting to load a library after installation.
(PUP-1769) yum provider takes install_options

The yum provider now supports install_options.
(PUP-1769) Changing the has_feature to a one-liner
(maint) Use git mirrors for puppet/hiera/facter installation

The git server and fork used to construct git urls for installation
projects via beaker was previously hard set to be github.com and
puppetlabs.  While we continue to default to these values, this commit
allows them to be set globally or per installed project via environment
variables so that we can take advantage of internal and local git
mirrors and daemons.
(PUP-1552) Create new issue type for authorization

Authorization can be a tricky thing, but reporting it as a runtime error
is misleading. This creates a new FAILED_AUTHORIZATION issue and labels
the failure to authorize because of the method as UNSUPPORTED_METHOD.
(pup-1952) Add jruby-19mode to travis ci (but under allow_failures)
(pup-1952) Break out jruby versions of gems as needed
(pup-1952) Accomodate that jruby can't fork
(pup-1952) Increase jruby heap size for travis CI
(maint) Fix class relationships

Fixes the following manifest: Class[foo] -> Class[bar]

Would fail with undefined local variable or method `host_class'
exception.
Merge pull request #2438 from dalen/hostclasstypefix

(maint) Fix class relationships
(PUP-1962) Fix class relationships

Fixes the following manifest: Class[foo] -> Class[bar]

Would fail with undefined local variable or method `host_class'
exception.
(PUP-748) Fix the zypper package provider support for install_options.

When install_options is a hash, the options are rendered with a space.
This is causing zypper to interpret the option incorrectly when
using Kernel.exec.

For example, this fails with "unknown option '--from 1'":
Kernel.exec 'zypper', 'install', '--from 1', 'vim'

While this succeeds:
Kernel.exec 'zypper', 'install', '--from=1', 'vim'

The fix is to use the supported option syntax that uses
an equal sign instead of a space.

Also flattening the options instead of joining them so that
multiple options in a hash are not interpreted as a single option.
(PUP-748) Add specs for zypper install_options.

Remove expected nil when calling execute without install_options.

Add specs for install_options as a hash, array, or string.