Debian api_uwsgi_config: Switch to :ini_setting

On each puppet run, I'm seeing:
value changed ['12'] to '12' (corrective)

Therefore, this patch switches from :openstackconfig to :ini_setting
to make the 2nd run not changing anything.

Change-Id: Ib674673edec143841aa88d754ea2e9b0cb13be1a

lib/puppet/provider/gnocchi_api_uwsgi_config/ini_setting.rb

@@ -1,6 +1,6 @@
 Puppet::Type.type(:gnocchi_api_uwsgi_config).provide(
-  :openstackconfig,
-  :parent => Puppet::Type.type(:openstack_config).provider(:ruby)
+  :ini_setting,
+  :parent => Puppet::Type.type(:openstack_config).provider(:ini_setting)
 ) do
 
   def self.file_path

spec/spec_helper.rb

@@ -1,3 +1,5 @@
+# Load libraries from openstacklib here to simulate how they live together in a real puppet run (for provider unit tests)
+$LOAD_PATH.push(File.join(File.dirname(__FILE__), 'fixtures', 'modules', 'openstacklib', 'lib'))
 require 'puppetlabs_spec_helper/module_spec_helper'
 require 'shared_examples'
 require 'puppet-openstack_spec_helper/facts'

spec/unit/provider/gnocchi_api_uwsgi_config/ini_setting_spec.rb

@@ -9,19 +9,8 @@ $LOAD_PATH.push(
     'inifile',
     'lib')
 )
-$LOAD_PATH.push(
-  File.join(
-    File.dirname(__FILE__),
-    '..',
-    '..',
-    '..',
-    'fixtures',
-    'modules',
-    'openstacklib',
-    'lib')
-)
 require 'spec_helper'
-provider_class = Puppet::Type.type(:gnocchi_api_uwsgi_config).provider(:openstackconfig)
+provider_class = Puppet::Type.type(:gnocchi_api_uwsgi_config).provider(:ini_setting)
 describe provider_class do
 
   it 'should default to the default setting when no other one is specified' do