Print "Success" on incremental install success.

In the past, adb printed any message from the PM's stdout to adb's
stdout, including the message "Success".
commit b813134279576a75fe3092fe969280a701e48476 changed this, so adb now
only prints failure messages. On success, it doesn't print the message
from the PM's stdout, so the output now looks like:

Serving...
All files should be loaded. Notifying the device.
Performing Incremental Install
Install command complete in xxx ms

The change broke some tests as they expect the string "Success" in the
output. This CL fixes it by adding "Success" back.

Bug: 433965047
Bug: 372868052
Bug: 425728587
Test: adb install-multiple --incremental base.apk base.dm
Flag: EXEMPT adb client only
Change-Id: Ida22e9d0cc4387127e3205112ece12e41e96122c
1 file changed