Tighter error handling in updateSearchIndex

Do away with delayed failure - just fail as soon as there is an error.
Trying to proceed was too dangerous.

Small and only somewhat related:  When index identifier is printed
print the whole index name so if there is a failure and you know you can
remove the failed index then you can just highlight the printed name and
paste it into curl -XDELETE <elastic_host>:9200/<paste>.

Bug: 57250
Change-Id: Ic95144723ea60c7075dda7884eefbe0554d4b1d7
Merge "Tighter error handling in updateSearchIndex"