Import legacy tox jobs

Import the legacy Zuul tox jobs and convert them to native Zuul v3
native jobs.

Needed-By: I377e3c75ecbea3c17b5073865af254000b1800ff
Change-Id: I67ac8cb4ce20baa003dfb94dedf145b0779a6b99

.zuul.yaml

@@ -0,0 +1,56 @@
+- project:
+    name: openstack/swift3
+    check:
+      jobs:
+        - swift3-tox-keystone
+        - swift3-tox-s3acl
+        - swift3-tox-tempauth
+        - swift3-tox-s3tests_keystone:
+            voting: false
+        - swift3-tox-s3tests_tempauth:
+            voting: false
+    gate:
+      jobs:
+        - swift3-tox-keystone
+        - swift3-tox-s3acl
+        - swift3-tox-tempauth
+
+- job:
+    name: swift3-tox-keystone
+    parent: openstack-tox-py27
+    description: |
+      Run tests using ``keystone`` environment.
+    vars:
+      tox_envlist: keystone
+
+- job:
+    name: swift3-tox-s3acl
+    parent: openstack-tox-py27
+    description: |
+      Run tests using ``s3acl`` environment.
+    vars:
+      tox_envlist: s3acl
+
+- job:
+    name: swift3-tox-tempauth
+    parent: openstack-tox-py27
+    description: |
+      Run tests using ``tempauth`` environment.
+    vars:
+      tox_envlist: tempauth
+
+- job:
+    name: swift3-tox-s3tests_keystone
+    parent: openstack-tox-py27
+    description: |
+      Run tests using ``s3tests_keystone`` environment.
+    vars:
+      tox_envlist: s3tests_keystone
+
+- job:
+    name: swift3-tox-s3tests_tempauth
+    parent: openstack-tox-py27
+    description: |
+      Run tests using ``s3tests_tempauth`` environment.
+    vars:
+      tox_envlist: s3tests_tempauth