Standardise CI job names

Drop the 'test-s3api-' prefix from the CI jobs.

Change-Id: I3c7c456a34cea4999ef637e1ad3e46395a993941

osci.yaml

@@ -1,49 +1,9 @@
 - project:
     templates:
       - charm-unit-jobs-py310
-    check:
-      jobs:
-        - test-s3api-jammy-antelope
-        - test-s3api-jammy-bobcat:
-            voting: false
-        - test-s3api-lunar-antelope:
-            voting: false
-        - test-s3api-mantic-bobcat:
-            voting: false
+      - charm-functional-jobs
     vars:
       needs_charm_build: true
       charm_build_name: swift-proxy
       build_type: charmcraft
-      charmcraft_channel: 2.1/stable
-
-- job:
-    name: test-s3api-jammy-antelope
-    parent: func-target
-    dependencies:
-      - charm-build
-      - osci-lint
-      - name: tox-py310
-        soft: true
-    vars:
-      tox_extra_args: '-- test-s3api:jammy-antelope'
-- job:
-    name: test-s3api-jammy-bobcat
-    parent: func-target
-    dependencies:
-      - test-s3api-jammy-antelope
-    vars:
-      tox_extra_args: '-- test-s3api:jammy-bobcat'
-- job:
-    name: test-s3api-lunar-antelope
-    parent: func-target
-    dependencies:
-      - test-s3api-jammy-antelope
-    vars:
-      tox_extra_args: '-- test-s3api:lunar-antelope'
-- job:
-    name: test-s3api-mantic-bobcat
-    parent: func-target
-    dependencies:
-      - test-s3api-jammy-antelope
-    vars:
-      tox_extra_args: '-- test-s3api:mantic-bobcat'
+      charmcraft_channel: 2.x/stable