Remove handling of 'u' prefix

... because the prefix is no longer printed in Python 3.

In python 2
>>> print({u'foo': u'baa'})
{u'foo': u'baa'}
>>> print([u'foo', 'baa'])
[u'foo', 'baa']

In python 3
>>> print({u'foo': u'baa'})
{'foo': 'baa'}
>>> print([u'foo', 'baa'])
['foo', 'baa']

Change-Id: I8f4adab5d7c6c8730d08f9311c55783ea719527f

lib/puppet/provider/cinder_type/openstack.rb

@@ -114,7 +114,7 @@ Puppet::Type.type(:cinder_type).provide(
   end
 
   def self.pythondict2array(input)
-    json_input = JSON.parse(input.gsub(/u'([^']*)'/, '"\1"').gsub(/'/, '"'))
+    json_input = JSON.parse(input.gsub(/'/, '"'))
     output = []
     json_input.each do | k, v |
       output = output + ["#{k}=#{v}"]

spec/unit/provider/cinder_type/openstack_spec.rb

@@ -122,7 +122,7 @@ access_project_ids="54f4d231201b4944a5fa4587a09bda23, 54f4d231201b4944a5fa4587a0
 
       describe '#pythondict2array' do
         it 'should return an array with key-value when provided with a unicode python dict' do
-          s = "{u'key': 'value', u'key2': 'value2'}"
+          s = "{'key': 'value', 'key2': 'value2'}"
           expect(provider_class.pythondict2array(s)).to eq(['key=value', 'key2=value2'])
         end
 
@@ -139,7 +139,7 @@ access_project_ids="54f4d231201b4944a5fa4587a09bda23, 54f4d231201b4944a5fa4587a0
         end
 
         it 'should call pythondict2array when provided with a hash' do
-          s = "{u'key': 'value', u'key2': 'value2'}"
+          s = "{'key': 'value', 'key2': 'value2'}"
           expect(provider_class.parsestring(s)).to eq(['key=value', 'key2=value2'])
         end
       end