Autocomplete Address Form sample: soft keyboard covers map

[wangela]

In AutocompleteAddressActivity.java, once the address gets populated from the Autocomplete response, focus is placed on the Address Line 2 input field which causes the soft keyboard to engage and cover half the screen, including covering up the confirmation map. If a user doesn't need to fill in Address Line 2, they must scroll down to find the map and the submit button.

As discussed in the PR comments, we can try a couple of approaches to improve the UX.