ci: skip memory integration tests on aarch64

Since the new feature: memory hotplug, which uses the " (qemu)
device_add pc-dimm,id=dimm1,memdev=mem1 " to limit memory on runtime,
is not availble on arm platform, for now we just have to resort to
skip relevant tests in aarch64.

Fixes: #879

Signed-off-by: Penny Zheng [email protected]

Author: Pennyzct

.ci/aarch64/configuration_aarch64.yaml

@@ -21,7 +21,9 @@ docker:
     - Update number of CPUs
     - Hot plug CPUs
     - Update CPU constraints
+    - memory constraints
+    - Hotplug memory when create containers
+    - run container and update its memory constraints
   Context:
     - remove bind-mount source before container exits
-    - run container exceeding memory constraints
   It: