(PUP-2240) Add unfold of array using splat unary * operator

This adds the ability to unfold values into individual parameters
and entries in lists the same way as this is done in Ruby.
(PUP-2240) Fix failing test (hash order ruby 1.8.7)
(maint) Remove calls to removed function

On master, the extra check if a function was available before evaluating
arguments was removed. The rebased code still had this call.
(PUP-2287) Fix lambda param with default is always choosen

This fixes the problem that a lambda parameter with a default always
was choosen even if a value was given for the parameter.

The expected behavior for function calls is that only truly missing (non
given) arguments are subjects to default value replacement, not if a
value is nil or undef. (This because functions are call by position, and
not call by name as for defines and classes). Thus all nil/undef values
are treated as any other value.

One test for the map function relied on the now fixed bug and it has
been marked pending, as it should be updated once the map function has
been transitioned to the new function API. (Where undef is not
transformed to empty string).
(maint) Update test using old style initialization of loaders

The API for creating loaders was changed (now requiring an environment).
This updates the logic that used the old API.
(PUP-2369) Add class to the message we return.

Add the class of the values we're changing from and to in the message
that's being returned. At the very least this will give developers a
hint about the types they're comparing explaining possible weird
behaviour.
(doc) Improve description of certname setting

This commit mentions our recommendations for certname values, as well as the one
reserved certname of `ca`. It also adds some context about what the certname is
used for.
(doc) Improve description of recurse, recurselimit, and purge attributes

The file type's `recurse` attribute didn't really explain what it did, and
didn't accurately describe the difference between `true` and `remote`. This
commit clears that all up.
(doc) Exec type: Clarify that onlyif/unless use exit codes, not stdout

This commit also clarifies that they use the same provider as the main command.
(doc) List order of log levels in description of the loglevel metaparameter
(doc) List allowed log levels in description of the log_level setting
(PUP-2010) have test repos pushed to hosts during acceptance testing

This patch changes the logic of how test packages are installed on SUTs.
Currently, repo packages are pulled by the individual SUTs - this works
because we assume that the SUTs are located within the Puppet Labs
network and can access builds.puppetlabs.lan. To run acceptance tests
in the cloud the workflow needs to be changed to have the test packages
pushed to the SUTs by the jenkins master node.

Tested successfully on jenkins, also updated spec tests.

This code relies on Beaker 1.8+ DSL methods.
(PUP-2014) Make gem provider match on a single gem name

Currently the gem provider will match gemname$, for example with bundler
this will return quite a long list of anything ending with bundler. When
a match returns a longer list, it will actually connect and try to pull
the latest gem again, thus increasing the WAN usage and rubygems.org
usage when not necessary.

The proposed fix adds a ^ in front of the name var to ensure it begins
with the gemname.
(doc) Update package provider descriptions for install/uninstall options support.

Updating package provider descriptions to document support for install_options and uninstall_options.
Merge branch 'pull-2455'
(docs) Fix wording on environment_timeout setting

Including the AS_DURATION snippet (which is a complete sentence) midway through
a sentence results in wacky wording. This commit fixes it.
(maint) Print yard error message to STDERR, not STDOUT

As this is an error/warning, the output should be put to STDERR instead
of STDOUT so it can be easily filtered.
(maint) Fix Travis failures for 2.1.0 and 1.8.7.

Working around RVM issues on Travis CI by explicitly specifying the
patch level for 1.8.7 so that REE isn't used.

Working around an install issue with 2.1.0 by specifying 2.1.1 instead
of 2.1.0.
Merge pull request #2610 from peterhuene/travis/fix

(maint) Fix Travis failures for 2.1.0 and 1.8.7.
(maint) Fix two spec tests to be robust when running in a path with parens

Both of these spec tests were including the working directory (via
the 'envdir' variable) in the regex to match against, but did so without
properly escaping the directory path. This meant that if the working
directory path included parentheses they were interpreted as regex
symbols rather than bare parentheses.

This could be fixed by wrapping the envdir in Regexp.escape, but
the path isn't really important to check for in this warning message,
so I just removed it from the regex.