This file was misindented

There's no way to distinguish between a subsetting with a value and a
subsetting with no value, so add a parameter to allow that to be
specified.

MODULES-2212 - Add use_exact_match parameter for subsettings

…pace

(MODULES-1908) Munge the setting to ensure we always strip the whitespace

Previously, trying to use a space as a key_val_separator in the ini_setting
type would fail because #strip is being called on the key_val_separator
attribute, which completely kills the space. This commit checks to see
if key_val_separator has been set as a space, and, if so, sets the `k_v_s`
variable in the library to be ' ' instead of ''.  This in turn allows the
provider to check for existing values (instead of inserting the value every
time Puppet is run).

[MODULES-2369] Support a space as a key_val_separator

1.4.x mergeback

Release prep 1 4 2