Update CTS tests with new arrow behavior

We changed the behavior of up arrow on the first line to move to the
beginning of the buffer if not already there, and correspondingly for
down arrow on the last line and the end of the buffer. This patch
updates CTS to test the new behavior.

Bug: 17385784
Change-Id: I3cea2c070229fab7be8572efaafece02d588489f
2 files changed