RFR: 325: Transient network errors can cause skipped notifications

[Robin Westberg]

Hi all,

Please review this change that ensures that a remote storage repository is not considered empty when materialization
fails for unrelated reasons.

Best regards,
Robin

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Commit messages:
 - Ensure that the remote storage actually is empty before proceeding

Changes: https://git.openjdk.java.net/skara/pull/523/files
 Webrev: https://webrevs.openjdk.java.net/skara/523/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-325
  Stats: 72 lines in 3 files changed: 71 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/skara/pull/523.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/523/head:pull/523

PR: https://git.openjdk.java.net/skara/pull/523