[TIMOB-9680] Android: Fix TextField/TextArea focus/blur

[jquick-axway]

Note:
This is a continuation of @maggieaxway's PR #9014. A new PR needed to be created since previous PR's remote branch appears to have been deleted (ie: shows "unknown repository").

JIRA: https://jira.appcelerator.org/browse/TIMOB-9680

Expected: To achieve same behaviour as iOS

Test case:

var win = Ti.UI.createWindow({backgroundColor : 'gray', layout: 'vertical'});
var tf = Ti.UI.createTextField({value: 'text'});
var btn = Ti.UI.createButton({title: 'focus'});
var btn2 = Ti.UI.createButton({title: 'blur'});
btn.addEventListener('click', function() {
   tf.focus();
});
btn2.addEventListener('click', function() {
   tf.blur();
});
win.add(tf);
win.add(btn);
win.add(btn2);
win.open();

[jquick-axway]

@lokeshchdhry, this will need to be re-tested since the last PR's code was about 6 months old. We need to make sure that it still works now that it has been updated to 7.0.0.

[lokeshchdhry]

FR Passed.

The focus & the blur method works as expected.

Studio Ver: 4.10.0.201709271713
OS Ver: 10.12.3
SDK Ver: 7.0.0 local build
Xcode Ver: Xcode 8.3.3
Appc NPM: 4.2.10
Appc CLI: 6.3.0
Ti CLI Ver: 5.0.14
Alloy Ver: 1.10.7
Node Ver: 7.10.1
Java Ver: 1.8.0_101
Devices: ⇨ google Nexus 6P --- Android 8.0.0
⇨ google Nexus 5 --- Android 6.0.1

[maggieaxway]

CR pass. Great job of creating the unit test. Thank you