e2e-tests: Fix CloneUsingBothProtocols wait times

So they are more consistent with the overall scenario steps timing.

Fix the time unit plural form where many seconds.

Change-Id: I1d31859e65e840d90dd0f009da462b98c8d7756d

e2e-tests/src/test/scala/com/google/gerrit/scenarios/CloneUsingBothProtocols.scala

@@ -40,11 +40,11 @@ class CloneUsingBothProtocols extends GitSimulation {
       atOnceUsers(1)
     ),
     test.inject(
-      nothingFor(1 second),
+      nothingFor(2 seconds),
       constantUsersPerSec(1) during (2 seconds)
     ),
     deleteProject.test.inject(
-      nothingFor(3 second),
+      nothingFor(6 seconds),
       atOnceUsers(1)
     ),
   ).protocols(gitProtocol, httpProtocol)