Use capabilities in AW2S-based docker compose

ci-scripts/yaml_files/sa_aw2s_gnb/docker-compose.yml

 services:
     oai-gnb:
         image: oai-gnb-aw2s:latest
-        privileged: true
         network_mode: "host"
         container_name: oai-gnb-aw2s
+        cap_drop:
+            - ALL
+        cap_add:
+            - SYS_NICE
+            - IPC_LOCK
         ulimits:
           core: -1 # for core dumps
         environment: