(Android) Allow disableOpenGesture right or left in the drawer (#2189)

This pull request allows you to disable the open gesture only in one side of the drawer.

```
Navigation.startSingleScreenApp({
      screen: initialScreen,
      drawer: {
        left: {
          screen: DRAWER_SCREEN,
          disableOpenGesture: false,
        },
        right: {
          screen: SIDEBAR_FILTER_SCREEN,
          disableOpenGesture: true,
        },
      },
    });
```

If we pass disableOpenGesture to the drawer root object, like this: 

```
Navigation.startSingleScreenApp({
      screen: initialScreen,
      drawer: {
        left: {
          screen: DRAWER_SCREEN,
          disableOpenGesture: false,
        },
        right: {
          screen: SIDEBAR_FILTER_SCREEN,
          disableOpenGesture: true,
        },
        disableOpenGesture: true <======
      },
    });
```

Then the two drawer positions would be gesture disabled and the specific disableOpenGesture would be ignored. This way we don`t introduce breaking changes.

docs/top-level-api.md

     left: { // optional, define if you want a drawer from the left
       screen: 'example.FirstSideMenu', // unique ID registered with Navigation.registerScreen
       passProps: {}, // simple serializable object that will pass as props to all top screens (optional)
+      disableOpenGesture: false // optional, can the drawer be opened with a swipe instead of button
     },
     right: { // optional, define if you want a drawer from the right
       screen: 'example.SecondSideMenu', // unique ID registered with Navigation.registerScreen
       passProps: {} // simple serializable object that will pass as props to all top screens (optional)
+      disableOpenGesture: false // optional, can the drawer be opened with a swipe instead of button
     },
     style: { // ( iOS only )
       drawerShadow: true, // optional, add this if you want a side menu drawer shadow
     type: 'MMDrawer', // optional, iOS only, types: 'TheSideBar', 'MMDrawer' default: 'MMDrawer'
     animationType: 'door', //optional, iOS only, for MMDrawer: 'door', 'parallax', 'slide', 'slide-and-scale'
                                         // for TheSideBar: 'airbnb', 'facebook', 'luvocracy','wunder-list'
-    disableOpenGesture: false // optional, can the drawer be opened with a swipe instead of button
+    disableOpenGesture: false // optional, can the drawer, both right and left, be opened with a swipe instead of button
   },
   passProps: {}, // simple serializable object that will pass as props to all top screens (optional)
   animationType: 'slide-down' // optional, add transition animation to root change: 'none', 'slide-down', 'fade'

src/deprecated/platformSpecificDeprecated.android.js

       addNavigatorParams(result[key]);
       result[key] = adaptNavigationParams(result[key]);
       result[key].passProps = drawer[key].passProps;
-      result[key].disableOpenGesture = drawer.disableOpenGesture;
+      if (drawer.disableOpenGesture) {
+        result[key].disableOpenGesture = drawer.disableOpenGesture;
+      } else {
+        result[key].disableOpenGesture = drawer[key].disableOpenGesture;
+      }
+      
     } else {
       result[key] = null;
     }