engine/schema: fix cluster/zone settings with encrypted values (#12626)

Author: weizhouapache

engine/schema/src/main/java/com/cloud/dc/ClusterDetailsDaoImpl.java

@@ -163,7 +163,7 @@ public Scope getScope() {
     @Override
     public String getConfigValue(long id, String key) {
         ClusterDetailsVO vo = findDetail(id, key);
-        return vo == null ? null : vo.getValue();
+        return vo == null ? null : getActualValue(vo);
     }
 
     @Override

engine/schema/src/main/java/com/cloud/dc/dao/DataCenterDetailsDaoImpl.java

@@ -46,7 +46,7 @@ public Scope getScope() {
     @Override
     public String getConfigValue(long id, String key) {
         ResourceDetail vo = findDetail(id, key);
-        return vo == null ? null : vo.getValue();
+        return vo == null ? null : getActualValue(vo);
     }
 
     @Override