Add pillar include tests

tests/integration/files/pillar/base/glob_include.sls

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+include:
+  - 'glob_include*'

tests/integration/files/pillar/base/glob_include_a.sls

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+glob-a:
+  - 'Entry A'

tests/integration/files/pillar/base/glob_include_b.sls

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+glob-b:
+  - 'Entry B'

tests/integration/files/pillar/base/include-a.sls

@@ -0,0 +1,2 @@
+a:
+  - 'Entry A'

tests/integration/files/pillar/base/include-b.sls

@@ -0,0 +1,2 @@
+b:
+  - 'Entry B'

tests/integration/files/pillar/base/include.sls

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+include:
+  - include-a:
+      key: element:a
+  - include-b:
+      key: element:b

tests/integration/pillar/test_pillar_include.py

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+from __future__ import unicode_literals
+from tests.support.case import ModuleCase
+
+
+class PillarIncludeTest(ModuleCase):
+
+    def test_pillar_include(self):
+        '''
+        Test pillar include
+        '''
+        ret = self.minion_run('pillar.items')
+        assert 'a' in ret['element']
+        assert ret['element']['a'] == {'a': ['Entry A']}
+        assert 'b' in ret['element']
+        assert ret['element']['b'] == {'b': ['Entry B']}
+
+    def test_pillar_glob_include(self):
+        '''
+        Test pillar include via glob pattern
+        '''
+        ret = self.minion_run('pillar.items')
+        assert 'glob-a' in ret
+        assert ret['glob-a'] == 'Entry A'
+        assert 'glob-b' in ret
+        assert ret['glob-b'] == 'Entry B'