[CTS] Fix saving reports on GTS Verifier by sharing permission

The reports now correctly save, although the contents have not been
verified. Also fixes some strings to point to the correct version of
xTS.

Also see the GTS CL in the topic.

Fixes: 186523179
Bug: 174734150
Test: manual
Change-Id: Iae57efe7a378e106af1a798eca9199caf64a0634
4 files changed