This commit adds a native type that can check if
a line exists and append it to a file.

This use case seems common enough to warrant its
inclusion into stdlib.

Reviewed-by: Jeff McCune

This change adds a loadyaml() puppet function that takes a path to a
YAML data file and returns the contents as a Puppet variable.  There is
currently no validation of the contents of the file.

This commit is intentionally lacking unit tests because of time
constraints.

Reviewed-by: Dan Bode

* ticket/master/8585_load_yaml_function:
  (#8575) Add loadyaml() function

It is difficult to use existance of keys in a hash
as a boolean condition in Puppet (see #8705)

This function provides a working solution until
the underlying issue in Puppet can be resolved.

Reviewed-by: Jeff McCune

In Puppet, it is not possible to reassign hash
values.

This function allows a reasonable way to perform
hash munging in Puppet.

Reviewed-by: Jeff McCune

The previous behavior of the merge() function used Array#inject with two
arguments.  Ruby 1.8.5 only supports inject being used with one
argument.

This change initializes and empty Hash object and merges each argument
into the accumulator.  The last argument still "wins" in the merge.

rspec tests (cd spec; rspec **/*_spec.rb) verified as passing with this
change.

Reviewed-by: Dan Bode

* ticket/master/8717_merge_function_ruby_185:
  (#8717) Make merge() function work with Ruby 1.8.5

The accounts module is making use of validate_array() and
validate_string() which do not exist int he stdlib module without this
patch.

This patch adds the two functions to the stdlib with unit tests.

Reviewed-by: Dan Bode

* ticket/master/8678_validate_array_string:
  (#8678) Add validate_array and validate_string functions