Update ds-identify to pass shellcheck (#979)

This patch updates the ds-identify file to pass the
popular shell linter, shellcheck. Updates include:

* Global ignore for error code 3043, the warning about
  the "local" keyword not being POSIX compliant. This
  keyword is used everywhere and cannot be easily removed.

* Point-of-use ignore for error code 3013, the warning
  about the "-nt" comparator not being POSIX compliant.
  There's no POSIX compliant way to compare timestamps
  on two files without forking a new process, so this
  comparator remains.

* Several point-of-use ignores for error code 2254, the
  warning about quoting parameters. These warnings are
  ignored for the *_matches functions where wildcard
  tokens are expected to be used. Quoting the parameters
  would prevent the desired globbing and cause calls
  to these functions with wildcards to fail.

* A point-of-use ignore for error code 2086 for the
  same reason as the above ignore -- allowing globbing
  to take place for matching.

* Quoted parameters in the remainder of the locations
  where it was safe to do so and did not break the
  tests.

0 files changed, 0 insertions, 0 deletions