fix(cvedb): skip reject cve entries

[imsahil007]

this will close #1269

[anthonyharrison]

@imsahil007 This is exactly the same fix that I just tried!

[imsahil007]

cve-bin-tool/test/test_nvd_api.py

Line 67 in 4037ce7

"""Test to match the totalResults and the total CVE count on NVD """

@anthonyharrison In #1218 I have added a test for verifying the CVE count exclusive of the rejected CVEs.
Should I add a similar test here?
Note: That test will require fetching all JSON feeds to compute CVE count in this case.

[terriko]

I think it's a potentially interesting test for us to check on any disparity between what we're getting and what NVD is reporting. We should see if we can combine it with any other test that downloads that data -- maybe the test_json stuff?

That said, I think this change is good as-is, so I'm going to go ahead and merge it without a test for now.