[Temp] Add sleep between tests to analyze the issue.

Author: style95

tests/src/test/scala/org/apache/openwhisk/core/limits/ActionLimitsTests.scala

@@ -39,21 +39,13 @@ import common.WskTestHelpers
 import common.WskActorSystem
 import spray.json._
 import spray.json.DefaultJsonProtocol._
-import org.apache.openwhisk.core.entity.{
-  ActivationEntityLimit,
-  ActivationResponse,
-  ByteSize,
-  ConcurrencyLimit,
-  Exec,
-  LogLimit,
-  MemoryLimit,
-  TimeLimit
-}
+import org.apache.openwhisk.core.entity.{ActivationEntityLimit, ActivationResponse, ByteSize, ConcurrencyLimit, Exec, LogLimit, MemoryLimit, TimeLimit}
 import org.apache.openwhisk.core.entity.size._
 import org.apache.openwhisk.http.Messages
+import org.scalatest.BeforeAndAfterAll
 
 @RunWith(classOf[JUnitRunner])
-class ActionLimitsTests extends TestHelpers with WskTestHelpers with WskActorSystem with TimingHelpers {
+class ActionLimitsTests extends TestHelpers with WskTestHelpers with WskActorSystem with TimingHelpers with BeforeAndAfterAll {
 
   implicit val wskprops = WskProps()
   val wsk = new WskRestOperations
@@ -77,6 +69,10 @@ class ActionLimitsTests extends TestHelpers with WskTestHelpers with WskActorSys
   // * With Docker 18.09.3, we observed test failures and changed to "openFileLimit - 24".
   val minExpectedOpenFiles = openFileLimit - 24
 
+  override protected def beforeAll(): Unit = {
+    Thread.sleep(60000);
+  }
+
   behavior of "Action limits"
 
   /**