added accessibility props for touchables

Summary:
accessibilityLabels are missing in these touchable*.js files.
for #5322
ide This is not tested yet. I will update with test.
Closes https://github.com/facebook/react-native/pull/5346

Reviewed By: svcscm

Differential Revision: D2882061

Pulled By: gkassabli

fb-gh-sync-id: dff0ef373e5f5895027cb1cc08c8887a6ace8eee

Libraries/Components/Touchable/TouchableBounce.js

@@ -117,6 +117,9 @@ var TouchableBounce = React.createClass({
       <Animated.View
         style={[{transform: [{scale: this.state.scale}]}, this.props.style]}
         accessible={true}
+        accessibilityLabel={this.props.accessibilityLabel}
+        accessibilityComponentType={this.props.accessibilityComponentType}
+        accessibilityTraits={this.props.accessibilityTraits}
         testID={this.props.testID}
         onStartShouldSetResponder={this.touchableHandleStartShouldSetResponder}
         onResponderTerminationRequest={this.touchableHandleResponderTerminationRequest}

Libraries/Components/Touchable/TouchableHighlight.js

@@ -215,6 +215,7 @@ var TouchableHighlight = React.createClass({
     return (
       <View
         accessible={true}
+        accessibilityLabel={this.props.accessibilityLabel}
         accessibilityComponentType={this.props.accessibilityComponentType}
         accessibilityTraits={this.props.accessibilityTraits}
         ref={UNDERLAY_REF}

Libraries/Components/Touchable/TouchableNativeFeedback.android.js

@@ -200,6 +200,7 @@ var TouchableNativeFeedback = React.createClass({
       ...onlyChild(this.props.children).props,
       nativeBackgroundAndroid: this.props.background,
       accessible: this.props.accessible !== false,
+      accessibilityLabel: this.props.accessibilityLabel,
       accessibilityComponentType: this.props.accessibilityComponentType,
       accessibilityTraits: this.props.accessibilityTraits,
       testID: this.props.testID,

Libraries/Components/Touchable/TouchableOpacity.js

@@ -154,6 +154,7 @@ var TouchableOpacity = React.createClass({
     return (
       <Animated.View
         accessible={true}
+        accessibilityLabel={this.props.accessibilityLabel}
         accessibilityComponentType={this.props.accessibilityComponentType}
         accessibilityTraits={this.props.accessibilityTraits}
         style={[this.props.style, {opacity: this.state.anim}]}

Libraries/Components/Touchable/TouchableWithoutFeedback.js

@@ -135,6 +135,7 @@ var TouchableWithoutFeedback = React.createClass({
     // Note(avik): remove dynamic typecast once Flow has been upgraded
     return (React: any).cloneElement(onlyChild(this.props.children), {
       accessible: this.props.accessible !== false,
+      accessibilityLabel: this.props.accessibilityLabel,
       accessibilityComponentType: this.props.accessibilityComponentType,
       accessibilityTraits: this.props.accessibilityTraits,
       testID: this.props.testID,