Fix ITSearchTabTest#testSearch random failure due to missing tear down

16:36:13 14:36:14,966 ERROR [AbstractTest] Test 'org.nuxeo.ftest.cap.ITSearchTabTest#testSearch' failed
16:36:13 java.lang.AssertionError: expected:<1> but was:<2>
16:36:13 	at org.junit.Assert.fail(Assert.java:88)
16:36:13 	at org.junit.Assert.failNotEquals(Assert.java:743)
16:36:13 	at org.junit.Assert.assertEquals(Assert.java:118)
16:36:13 	at org.junit.Assert.assertEquals(Assert.java:555)
16:36:13 	at org.junit.Assert.assertEquals(Assert.java:542)
16:36:13 	at org.nuxeo.ftest.cap.ITSearchTabTest.testSearch(ITSearchTabTest.java:128)
16:36:13 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
16:36:13 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
16:36:13 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
16:36:13 	at java.lang.reflect.Method.invoke(Method.java:606)
16:36:13 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
16:36:13 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
16:36:13 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
16:36:13 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
16:36:13 	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
16:36:13 	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
16:36:13 	at org.nuxeo.functionaltests.LogTestWatchman$1.evaluate(LogTestWatchman.java:94)
16:36:13 	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
16:36:13 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
16:36:13 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
16:36:13 	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
16:36:13 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
16:36:13 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
16:36:13 	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
16:36:13 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
16:36:13 	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
16:36:13 	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
16:36:13 	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
16:36:13 	at org.junit.runners.Suite.runChild(Suite.java:127)
16:36:13 	at org.junit.runners.Suite.runChild(Suite.java:26)
16:36:13 	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
16:36:13 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
16:36:13 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
16:36:13 	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
16:36:13 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
16:36:13 	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
16:36:13 	at org.junit.runner.JUnitCore.run(JUnitCore.java:160)
16:36:13 	at org.junit.runner.JUnitCore.run(JUnitCore.java:138)
16:36:13 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.createRequestAndRun(JUnitCoreWrapper.java:113)
16:36:13 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.executeEager(JUnitCoreWrapper.java:85)
16:36:13 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:54)
16:36:13 	at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:134)
16:36:13 	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:200)
16:36:13 	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:153)
16:36:13 	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
16:36:15 Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 49.027 sec <<< FAILURE! - in org.nuxeo.ftest.cap.ITSearchTabTest
16:36:15 testSearch(org.nuxeo.ftest.cap.ITSearchTabTest)  Time elapsed: 47.324 sec  <<< FAILURE!
16:36:15 java.lang.AssertionError: expected:<1> but was:<2>
16:36:15 	at org.junit.Assert.fail(Assert.java:88)
16:36:15 	at org.junit.Assert.failNotEquals(Assert.java:743)
16:36:15 	at org.junit.Assert.assertEquals(Assert.java:118)
16:36:15 	at org.junit.Assert.assertEquals(Assert.java:555)
16:36:15 	at org.junit.Assert.assertEquals(Assert.java:542)
16:36:15 	at org.nuxeo.ftest.cap.ITSearchTabTest.testSearch(ITSearchTabTest.java:128)