New data file to test the qc flag used in rttov interface

[rajichidamb]

Description

Adding new group TestQcValue to the Obs file for testing purpose. This is just needed for testing since model will be providing the qc flag. When replacing the file testinput_tier_1/atms_n20_obs_20191230T0000_rttov.nc4 instead of creating new file testinput_tier_1/atms_n20_obs_20191230T0000_rttov_qc.nc4, I found some tests failing due to reference value mismatch -
The following tests failed
ufo_test_tier1_test_ufo_print_filter_data, ufo_test_tier1_test_ufo_print_filter_data_MPI2, ufo_test_tier1_test_ufo_print_filter_data_MPI3, ufo_test_tier1_test_ufo_print_filter_data_inefficient_distribution, ufo_test_tier2_test_ufo_atms_rttov_ops_qc_rttovonedvarcheck, ufo_test_tier1_test_ufo_function_bennartzscatindex

The following tests passed:
ufo_test_tier1_test_ufo_print_filter_data_MPI2_rank0
ufo_test_tier1_test_ufo_print_filter_data_time_window_selection
ufo_test_tier1_test_ufo_print_filter_data_time_window_selection_MPI2

So created a new obs file with new TestQcValue group.

Issue(s) addressed

Resolves #https://github.com/JCSDA-internal/ufo/issues/3265

Dependencies

List the other PRs that this PR is dependent on:

• https://github.com/JCSDA-internal/oops/pull/3160

Impact

Expected impact on downstream repositories:

Manual Testing Instructions (optional)

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Checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation
• I have run the unit tests before creating the PR

[fcvdb]

Thanks Raji!

[mikecooke77]

I'm not sure I understand why the tests were failing. If I understand correctly a new entry was added. How does this change the reference output? Surely if the reference changes this is a sign that its not working as expected? Or should there be new references in the existing file for the new testing added? Just trying to avoid duplicate files.

[fcvdb]

Thanls Raji!