[DESCRIPTION]
低于内存是512MB的android go项目，maps go是optional app.(参考GMS Go Requirements - 2018-02-23.pdf第3页)，
但是移除掉的话，会出现如下GTS fail：
Module:GtsOsTestCases
Test:com.google.android.os.gts.SysConfigTest#testValidSysConfigPresent
com.google.android.os.gts.SysConfigTest#testValidSysConfigPresent
fail
java.lang.AssertionError: Modification of required config file: Missing elements for tag linkedApps: 'com.google.android.apps.maps' . required={com.android.vending, com.google.android.music, com.google.android.apps.docs, com.google.android.apps.maps, com.google.android.videos, com.google.android.apps.photos, com.google.android.calendar, com.google.android.apps.tycho, com.google.android.talk, com.google.android.apps.youtube.mango} . all={com.google.android.apps.docs.editors.docs, com.google.android.apps.mapslite, com.google.android.apps.docs.editors.sheets, com.google.android.apps.docs.editors.slides, com.android.vending, com.google.android.music, com.google.android.apps.docs, com.google.android.apps.plus, com.google.android.videos, com.google.android.apps.photos, com.google.android.calendar, com.google.android.apps.tycho, com.google.android.talk, com.google.android.apps.youtube.mango} at org.junit.Assert.fail(Assert.java:88) at com.google.android.os.gts.SysConfigTest.assertSystemConfigEquals(SysConfigTest.java:424) at com.google.android.os.gts.SysConfigTest.testValidSysConfigPresent(SysConfigTest.java:112)
[SOLUTION]
修改etc/sysconfig/google.xml，将这一行 "<app-link package="com.google.android.apps.mapslite" />" 修改成 "<app-link package="com.google.android.apps.maps" />" 即可pass GTS。