Change SyncTags to only backfill coms-id tag for latest version

[TimCsaky]

writing coms-id to tag to all versions in S3 alters Last Modified date for objects in Dell ECS, so we avoid soing this during a sync.

Description

ticket: https://apps.nrs.gov.bc.ca/int/jira/browse/SHOWCASE-3387

during sync of objects in Dell S3, the SyncTags() sub-routine adds coms-id tag which in turn was altering Last Modified property of all S3 versions. This is an unwanted side-affect that may confuse file owners looking at dates. (see JIRA ticket for logs) Solution is to only add coms-id tag to latest version which does not alter Last Modified for any version.

Types of changes

Checklist

• [ ] I have read the CONTRIBUTING doc
• [ ] I have checked that unit tests pass locally with my changes
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation (if appropriate)

Further comments

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[codeclimate[bot]]

Code Climate has analyzed commit a3d90f44 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 64.7% (0.0% change).

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