Use shell commands instead of ITestDevice for BootImageProfile test

For some reason, ITestDevice property getting and setting is flaky on
GCE. This causes frequent test failures.

Test: tested on cuddlefish device
Bug: 149802360

(cherry-picked from commit 94d9a21c)

Merged-In: Iba48c173bdea2d55d8f2aa7f0fa382628582fe1c
Change-Id: Iba48c173bdea2d55d8f2aa7f0fa382628582fe1c