Replace test.attr with decorators.attr

Function 'tempest.test.attr()' has moved to 'tempest.lib.decorators
.attr()' in Pike and will be removed in a future version[1].
This patch replaces the 'tempest.test.attr()' with the 'tempest.lib
.decorators.attr().'

1)https://review.openstack.org/#/c/456236/
Change-Id: If30ad26c17f443b1ef0fbabd94a46b7cc23a51e8

freezer/tests/freezer_tempest_plugin/tests/api/test_backup_compress.py

@@ -16,7 +16,7 @@ import json
 import os
 import subprocess
 
-from tempest import test
+from tempest.lib import decorators
 
 from freezer.tests.freezer_tempest_plugin.tests.api import base
 from freezer.tests.integration import common
@@ -123,7 +123,7 @@ class TestFreezerCompressGzip(base.BaseFreezerTest):
 
         return out.strip()
 
-    @test.attr(type="gate")
+    @decorators.attr(type="gate")
     def test_freezer_backup_compress_gzip(self):
         backup_name = 'freezer-test-backup-gzip-0'
 
@@ -146,7 +146,7 @@ class TestFreezerCompressGzip(base.BaseFreezerTest):
         self.run_subprocess(diff_args, 'Verify restored copy is identical to '
                                        'original.')
 
-    @test.attr(type="gate")
+    @decorators.attr(type="gate")
     def test_freezer_backup_compress_bzip2(self):
         backup_name = 'freezer-test-backup-bzip2-0'
 
@@ -166,7 +166,7 @@ class TestFreezerCompressGzip(base.BaseFreezerTest):
         self.run_subprocess(diff_args, 'Verify restored copy is identical to '
                                        'original.')
 
-    @test.attr(type="gate")
+    @decorators.attr(type="gate")
     def test_freezer_backup_compress_xz(self):
         backup_name = 'freezer-test-backup-xz-0'
 

freezer/tests/freezer_tempest_plugin/tests/api/test_fs_backup.py

@@ -16,7 +16,7 @@ import os
 import shutil
 
 from oslo_utils import uuidutils
-from tempest import test
+from tempest.lib import decorators
 
 from freezer.tests.freezer_tempest_plugin.tests.api import base
 
@@ -71,7 +71,7 @@ class TestFreezerFSBackup(base.BaseFreezerTest):
         shutil.rmtree(self.restore_target_dir, True)
         shutil.rmtree(self.backup_local_storage_dir)
 
-    @test.attr(type="gate")
+    @decorators.attr(type="gate")
     def test_freezer_fs_backup(self):
         backup_args = ['freezer-agent',
                        '--path-to-backup',

freezer/tests/freezer_tempest_plugin/tests/api/test_metadata_checksum.py

@@ -13,7 +13,7 @@
 # under the License.
 import subprocess
 
-from tempest import test
+from tempest.lib import decorators
 
 from freezer.tests.freezer_tempest_plugin.tests.api import base
 from freezer.tests.integration import common
@@ -36,7 +36,7 @@ class TestFreezerMetadataChecksum(base.BaseFreezerTest):
 
         self.dest_tree.cleanup()
 
-    @test.attr(type="gate")
+    @decorators.attr(type="gate")
     def test_freezer_fs_backup_valid_checksum(self):
         # perform a normal backup, but enable consistency checks and save the
         # metadata to disk
@@ -61,7 +61,7 @@ class TestFreezerMetadataChecksum(base.BaseFreezerTest):
                             'Test restore from local storage with '
                             'computed checksum.')
 
-    @test.attr(type="gate")
+    @decorators.attr(type="gate")
     def test_freezer_fs_backup_bad_checksum(self):
         # as above, but we'll ignore the computed checksum
         metadata_path = self.create_local_backup(consistency_check=True)

freezer/tests/freezer_tempest_plugin/tests/api/test_swift_backup.py

@@ -16,7 +16,7 @@ import os
 import shutil
 
 from oslo_utils import uuidutils
-from tempest import test
+from tempest.lib import decorators
 
 from freezer.tests.freezer_tempest_plugin.tests.api import base
 
@@ -64,7 +64,7 @@ class TestFreezerSwiftBackup(base.BaseFreezerTest):
         shutil.rmtree(self.backup_source_dir, True)
         shutil.rmtree(self.restore_target_dir, True)
 
-    @test.attr(type="gate")
+    @decorators.attr(type="gate")
     def test_freezer_swift_backup(self):
         backup_args = ['freezer-agent',
                        '--path-to-backup',

freezer/tests/freezer_tempest_plugin/tests/api/test_tests_running.py

@@ -12,14 +12,14 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from tempest import test
+from tempest.lib import decorators
 
 from freezer.tests.freezer_tempest_plugin.tests.api import base
 
 
 class TestFreezerTestsRunning(base.BaseFreezerTest):
 
-    @test.attr(type="gate")
+    @decorators.attr(type="gate")
     def test_tests_running(self):
         # See if tempest plugin tests run.
         self.assertEqual(1, 1, 'Tests are running')

freezer/tests/freezer_tempest_plugin/tests/api/test_version.py

@@ -14,7 +14,7 @@
 
 import subprocess
 
-from tempest import test
+from tempest.lib import decorators
 
 from freezer import __version__ as freezer_version
 from freezer.tests.freezer_tempest_plugin.tests.api import base
@@ -22,7 +22,7 @@ from freezer.tests.freezer_tempest_plugin.tests.api import base
 
 class TestFreezerVersion(base.BaseFreezerTest):
 
-    @test.attr(type="gate")
+    @decorators.attr(type="gate")
     def test_version(self):
 
         version = subprocess.check_output(['freezer-agent', '--version'],