Fix glob single file bug

[akharit]

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This checklist is used to make sure that common guidelines for a pull request are followed.

Description of the change

There is a bug in the code where when we encounter len(rfiles)==1, we try to check whether the rpath contained a dir or a file. When rpath is a glob i.e contains a * or ? this check fails as it tries to query the path as is. That is the info on paths like "/root/a/*/b.txt" fails and raises an exception.

General Guidelines

• The PR has modified HISTORY.rst with an appropriate description of the change and a version increment.
  Will be done when merge to master
• The PR has supporting test coverage that confirm the expected behavior and protects against regressions, including necessary recordings.
• Links to associated bugs, if any, are in the description.

[coveralls]

Coverage increased (+0.03%) to 86.556% when pulling 251d59c on akharit-fixGlobSingleFileBug into 750235b on dev.