[ATF integration] Resources converter

Converts resource from values.xml(Android) to strings.properties
(Generic Java).

Layoutlib runs in few different env (testing, and studio), which
made it hard to resolve ResourceBundle within ATF when running from
layoutlib.

Easiest way for now is to convert all strings to generic java
strings.properties for Studio to understand.

Bug: 150331000
Test: Manually tested
Change-Id: I7131c2e147f5185889b43da8aa9377dc0c1f4c6d
(cherry picked from commit 31338421e5f1d009b34ed7908964d903e9bd2921)
3 files changed