add some short names to save typing

'-d' is short for --skip-device-info, as it was before
'-o' is short for --skip-preconditions, new in v2

Bug: 27461530
Change-Id: Ide074f4140315072ef012de02679ae0d422fb197
diff --git a/common/host-side/tradefed/src/com/android/compatibility/common/tradefed/testtype/CompatibilityTest.java b/common/host-side/tradefed/src/com/android/compatibility/common/tradefed/testtype/CompatibilityTest.java
index d720878..330a669 100644
--- a/common/host-side/tradefed/src/com/android/compatibility/common/tradefed/testtype/CompatibilityTest.java
+++ b/common/host-side/tradefed/src/com/android/compatibility/common/tradefed/testtype/CompatibilityTest.java
@@ -141,10 +141,12 @@
     private String mURL;
 
     @Option(name = SKIP_DEVICE_INFO_OPTION,
+            shortName = 'd',
             description = "Whether device info collection should be skipped")
     private boolean mSkipDeviceInfo = false;
 
     @Option(name = SKIP_PRECONDITIONS_OPTION,
+            shortName = 'o',
             description = "Whether preconditions should be skipped")
     private boolean mSkipPreconditions = false;