Fix flaky test of StorageAugmenter.

Add `.get()` to the result of `.put()` action. Make sure the `.put()`
action is executed before querying the storage info.

Bug: 193900604
Test: atest -m -c --rebuild-module-info CtsAppSearchTestCases
Change-Id: If231274d924a22c2463511fa804eb615bd192a27
(cherry picked from commit c3cc676ad0efd3d65da86fc3910b696b3c4a0ec2)
1 file changed