Install Android system images for APIs 19, 21 and 22.
This is used for testing against multiple emulator API levels in
the Android Testing project.
@@ -46,6 +46,9 @@ tools/bin/sdkmanager \
"platforms;android-25" \
"platforms;android-26" \
"platforms;android-27" \
+ "system-images;android-19;default;x86" \
+ "system-images;android-21;default;x86" \
+ "system-images;android-22;default;x86" \
"system-images;android-23;default;x86" \
> /dev/null
chown -R root:root /opt/android*
