Add LUKS v2 tests

We currently have cryptsetup and LUKS v1 tests, but we are missing LUKS
v2 tests.

Code paths for LUKS v1 and LUKS v2 are different, because Nova uses
libvirt to decode LUKS v1 volumes but os-brick to decode LUKS v2
volumes.

This means that not only the attach process is different, but also some
features such as extend volume, so one of them may work while the other
doesn't.

This patch adds LUKS v2 encryption tests for all backends except for RBD
volumes, because they are not connected to the host but directly through
libvirt, so they can only use LUKS v1.

Depends-On: Ia1411f11ec4bf44af6a42d5f96c8a0903846ed66
Depends-On: I351f1a7769c9f915e4cd280f05a8b8b87f40df84
Related-Bug: #1967157
Change-Id: I40c518c3a3e760867efd6b6338fa9c16945b28c4
diff --git a/tools/tempest-integrated-gate-placement-exclude-list.txt b/tools/tempest-integrated-gate-placement-exclude-list.txt
index efba796..eb68b32 100644
--- a/tools/tempest-integrated-gate-placement-exclude-list.txt
+++ b/tools/tempest-integrated-gate-placement-exclude-list.txt
@@ -11,9 +11,11 @@
 
 # Skip Cinder, Glance and Swift only scenario tests.
 tempest.scenario.test_encrypted_cinder_volumes.TestEncryptedCinderVolumes.test_encrypted_cinder_volumes_luks
+tempest.scenario.test_encrypted_cinder_volumes.TestEncryptedCinderVolumes.test_encrypted_cinder_volumes_luks2
 tempest.scenario.test_encrypted_cinder_volumes.TestEncryptedCinderVolumes.test_encrypted_cinder_volumes_cryptsetup
 tempest.scenario.test_object_storage_basic_ops.TestObjectStorageBasicOps.test_swift_basic_ops
 tempest.scenario.test_object_storage_basic_ops.TestObjectStorageBasicOps.test_swift_acl_anonymous_download
 tempest.scenario.test_volume_boot_pattern.TestVolumeBootPattern.test_boot_server_from_encrypted_volume_luks
+tempest.scenario.test_volume_boot_pattern.TestVolumeBootPattern.test_boot_server_from_encrypted_volume_luks2
 tempest.scenario.test_volume_boot_pattern.TestVolumeBootPattern.test_image_defined_boot_from_volume
 tempest.scenario.test_volume_boot_pattern.TestVolumeBootPattern.test_create_server_from_volume_snapshot