Parses share targets from shortcuts.xml

Test: atest com.android.server.pm.ShortcutManagerTest1
Test: atest com.android.server.pm.ShortcutManagerTest2
Test: atest com.android.server.pm.ShortcutManagerTest3
Test: atest com.android.server.pm.ShortcutManagerTest4
Test: atest com.android.server.pm.ShortcutManagerTest5
Test: atest com.android.server.pm.ShortcutManagerTest6
Test: atest com.android.server.pm.ShortcutManagerTest7
Test: atest com.android.server.pm.ShortcutManagerTest8
Test: atest com.android.server.pm.ShortcutManagerTest9
Test: atest com.android.server.pm.ShortcutManagerTest10
Test: atest CtsShortcutHostTestCases CtsShortcutManagerTestCases

Change-Id: I1ddcd4e689f5d76d68b5068629cbe2c35d0a2841