Add test config for recovery_host_test

<?xml version="1.0" encoding="utf-8"?>

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<configuration description="Runs recovery_host_test.">

    <option name="null-device" value="true" />

    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer">

        <option name="force-root" value="false" />

    </target_preparer>

    <option name="not-shardable" value="true" />

    <test class="com.android.tradefed.testtype.HostGTest" >

        <option name="module-name" value="recovery_host_test" />

        <option name="native-test-timeout" value="5m"/>

    </test>

</configuration>