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: I21de3254caad3cf1805e41faa2ac8d458e61acbe

lib/puppet/provider/glance_image/openstack.rb

@@ -214,7 +214,7 @@ Puppet::Type.type(:glance_image).provide(
   end
 
   def self.pythondict2hash(input)
-    return JSON.parse(input.gsub(/u'(\w*)'/, '"\1"').gsub(/'/, '"').gsub(/False/,'false').gsub(/True/,'true'))
+    return JSON.parse(input.gsub(/'/, '"').gsub(/False/,'false').gsub(/True/,'true'))
   end
 
   def self.parsestring(input)

spec/unit/provider/glance_image_spec.rb

@@ -81,7 +81,7 @@ visibility="public"
 
     describe '#pythondict2hash' do
       it 'should return a hash 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.pythondict2hash(s)).to eq({"key"=>"value", "key2"=>"value2"})
       end
 
@@ -103,7 +103,7 @@ visibility="public"
       end
 
       it 'should call pythondict2hash 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