[s3acl] Step1: move s3account.AccountManager into to iam.S3ApiConfiguration (#4859)

* move s3account.AccountManager into to iam.S3ApiConfiguration and switch to Interface

https://github.com/seaweedfs/seaweedfs/issues/4519

* fix: test bucket acl default and
adjust the variable names

* fix: s3 api config test

---------

Co-authored-by: Konstantin Lebedev <9497591+kmlebedev@users.noreply.github.co>
Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com>

docker/compose/s3.json

@@ -40,7 +40,10 @@
         "List",
         "Tagging",
         "Write"
-      ]
+      ],
+      "account": {
+        "id": "testid"
+      }
     },
     {
       "name": "s3_tests_alt",
@@ -101,5 +104,12 @@
         "Write"
       ]
     }
-  ]
+  ],
+  "accounts": [
+      {
+        "id" : "testid",
+        "displayName": "M. Tester",
+        "emailAddress": "tester@ceph.com"
+      }
+    ]
 }