Temporarily add explicit step to disable keyguard to imf tests to attempt solve test flakiness.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.android.imftest.tests">

    <uses-permission android:name="android.permission.DISABLE_KEYGUARD" />

    <application>

        <uses-library android:name="android.test.runner" />

    </application>

package com.android.imftest.samples;

import android.app.Activity;

import android.app.KeyguardManager;

import android.content.Context;

import android.os.SystemClock;

import android.test.InstrumentationTestCase;

import android.view.KeyEvent;

        mTargetActivity = launchActivity(TARGET_PACKAGE_NAME, mTargetActivityClass, null);

        mExpectAutoPop = mTargetActivity.getResources().getBoolean(R.bool.def_expect_ime_autopop);

        mImm = InputMethodManager.getInstance(mTargetActivity);

        KeyguardManager keyguardManager =

            (KeyguardManager) getInstrumentation().getContext().getSystemService(

                    Context.KEYGUARD_SERVICE);

        keyguardManager.newKeyguardLock("imftest").disableKeyguard();

    }

    // Utility test methods