Fix TestAggregates.testPageProviderBooleanAggregate failing against MongoDB and PG

[2021-04-12T13:52:56.393Z] [INFO] Running org.nuxeo.elasticsearch.test.aggregates.TestAggregates
[2021-04-12T13:53:04.525Z] [ERROR] Tests run: 19, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 7.27 s <<< FAILURE! - in org.nuxeo.elasticsearch.test.aggregates.TestAggregates
[2021-04-12T13:53:04.525Z] [ERROR] testPageProviderBooleanAggregate(org.nuxeo.elasticsearch.test.aggregates.TestAggregates)  Time elapsed: 0.667 s  <<< FAILURE!
[2021-04-12T13:53:04.525Z] java.lang.AssertionError: expected:<10> but was:<11>
[2021-04-12T13:53:04.525Z] 	at org.junit.Assert.fail(Assert.java:89)
[2021-04-12T13:53:04.525Z] 	at org.junit.Assert.failNotEquals(Assert.java:835)
[2021-04-12T13:53:04.525Z] 	at org.junit.Assert.assertEquals(Assert.java:647)
[2021-04-12T13:53:04.525Z] 	at org.junit.Assert.assertEquals(Assert.java:633)
[2021-04-12T13:53:04.525Z] 	at org.nuxeo.elasticsearch.test.aggregates.TestAggregates.testPageProviderBooleanAggregate(TestAggregates.java:469)
[2021-04-12T13:53:04.525Z] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[2021-04-12T13:53:04.525Z] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[2021-04-12T13:53:04.525Z] 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[2021-04-12T13:53:04.526Z] 	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
[2021-04-12T13:53:04.526Z] 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
[2021-04-12T13:53:04.526Z] 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner$BeforeMethodRunStatement.evaluate(FeaturesRunner.java:396)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner$BeforeSetupStatement.evaluate(FeaturesRunner.java:410)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner.evaluateRunnable(FeaturesRunner.java:267)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner$AfterMethodRunStatement.evaluate(FeaturesRunner.java:432)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner.evaluateRunnable(FeaturesRunner.java:267)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner$AfterTeardownStatement.evaluate(FeaturesRunner.java:445)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner$RulesFactory$1.evaluate(FeaturesRunner.java:515)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.RuntimeDeployment$DeploymentStatement.evaluate(RuntimeDeployment.java:326)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner$AfterClassStatement.evaluate(FeaturesRunner.java:343)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner$RulesFactory$1.evaluate(FeaturesRunner.java:515)
[2021-04-12T13:53:04.526Z] 	at org.nuxeo.runtime.test.runner.FeaturesRunner$BeforeClassStatement.evaluate(FeaturesRunner.java:326)
[2021-04-12T13:53:04.526Z] 	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.Suite.runChild(Suite.java:128)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.Suite.runChild(Suite.java:27)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
[2021-04-12T13:53:04.526Z] 	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.junitcore.JUnitCore.run(JUnitCore.java:55)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.createRequestAndRun(JUnitCoreWrapper.java:137)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.executeEager(JUnitCoreWrapper.java:107)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:83)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.junitcore.JUnitCoreWrapper.execute(JUnitCoreWrapper.java:75)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.junitcore.JUnitCoreProvider.invoke(JUnitCoreProvider.java:158)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
[2021-04-12T13:53:04.526Z] 	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
[2021-04-12T13:53:04.526Z]