Skip pulling and reporting symbolic links for remote instances

Cuttlefish runtime directory contains binary files, symbolic links,
configurations, and logs. Acloud pulls unique files, and reports logs
and configurations only.

Test: acloud-dev create -vv --config-file ~/acloud-user.config \
      --host-user vsoc-01 --image-download-dir ~/download \
      --local-image \
      --report-file report.json \
      --host-ssh-private-key-path ~/id_rsa \
      --host 192.168.9.2 \
      --service-account-json-private-key-path ~/key.json
Bug: 154175542
Change-Id: I36757563defeb918eac81d7bc82af9f1785ff4d4
3 files changed