zuul: Exclude unneeded tests from multiattach job

Trim off some expensive tests that are run in other LVM
jobs already, and don't add value here.

Change-Id: I222033ecf33f08b1d92e527b0fcf95e038b45685
diff --git a/.zuul.yaml b/.zuul.yaml
index 6bbcd1b..01c465e 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -73,7 +73,9 @@
       tempest_test_regex: '(^tempest\.(api|scenario)|(^cinder_tempest_plugin))'
       tempest_test_exclude_list: '{{ ansible_user_dir }}/{{ zuul.projects["opendev.org/openstack/tempest"].src_dir }}/tools/tempest-integrated-gate-storage-exclude-list.txt'
       # Temporarily exclude TestMultiAttachVolumeSwap until LP bug #1980816 is resolved.
-      tempest_exclude_regex: 'TestMultiAttachVolumeSwap'
+      # Other excluded tests are tests that are somewhat time consuming but unrelated
+      # to multi-attach testing.
+      tempest_exclude_regex: 'TestMultiAttachVolumeSwap|^tempest.api.image|^tempest.api.object_storage|^tempest.scenario.test_volume_boot_pattern.TestVolumeBootPattern.test_boot_server_from_encrypted|^tempest.scenario.test_server_advanced_ops|^tempest.scenario.test_unified_limits'
       tox_envlist: all
       devstack_localrc:
         ENABLE_VOLUME_MULTIATTACH: true