Add job to test with SQLAlchemy master (2.x)

Change-Id: I26e49c2ea77d3eed852c30de3d8ff9122812cb48
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>

.zuul.yaml

@@ -77,6 +77,22 @@
         TUNNEL_IP_VERSION: 6
         SERVICE_HOST: ""
 
+# Temporary job until SQLAlchemy 2.0 is no longer blocked by upper-requirements
+- job:
+    name: masakari-tox-py310-with-sqlalchemy-2x
+    parent: openstack-tox-py310
+    description: |
+      Run unit tests with main branch of SQLAlchemy, alembic and oslo.db.
+      Takes advantage of the base tox job's install-siblings feature.
+    # The job only tests the latest and shouldn't be run on the stable branches
+    branches: ^(?!stable)
+    required-projects:
+      - name: github.com/sqlalchemy/sqlalchemy
+        override-checkout: main
+      - name: github.com/sqlalchemy/alembic
+        override-checkout: main
+      - name: openstack/oslo.db
+
 - project:
     queue: masakari
     templates:
@@ -93,11 +109,13 @@
         - openstack-tox-linters
         - masakari-functional-devstack-multinode
         - masakari-functional-devstack-ipv6
+        - masakari-tox-py310-with-sqlalchemy-2x
     gate:
       jobs:
         - openstack-tox-linters
         - masakari-functional-devstack-multinode
         - masakari-functional-devstack-ipv6
+        - masakari-tox-py310-with-sqlalchemy-2x
     periodic:
       jobs:
         - masakari-functional-devstack-multinode