exclude cdash url from url check

[shahzebsiddiqui]

this PR will exclude the cdash url https://my.cdash.org/ from the url checker action since some of the paths like https://my.cdash.org//viewTest.php?buildid=2278337 will get broken over time.

[shahzebsiddiqui]

@jscook2345 urlchecker is now passing https://github.com/buildtesters/buildtest/actions/runs/6013792381/job/16312012808?pr=1604 thanks for bringing this up

[jscook2345]

Looks like there was a warning in the readthedocs stuff, which should probably be fixed:

/home/docs/checkouts/readthedocs.org/user_builds/buildtest/checkouts/1604/docs/api/buildtest/defaults/index.rst:56: WARNING: duplicate object description of buildtest.defaults.VAR_DIR, other instance in api/buildtest/defaults/index, use :noindex: for one of them

[shahzebsiddiqui]

Looks like there was a warning in the readthedocs stuff, which should probably be fixed:

/home/docs/checkouts/readthedocs.org/user_builds/buildtest/checkouts/1604/docs/api/buildtest/defaults/index.rst:56: WARNING: duplicate object description of buildtest.defaults.VAR_DIR, other instance in api/buildtest/defaults/index, use :noindex: for one of them

Yeah i am trying to figure this out. Ideally this should not be documented because these are just variables. You can see https://buildtest.readthedocs.io/en/devel/api/buildtest/defaults/index.html page.

The main issue is we have multiple declarations in same file. I am trying to find way to ignore the file tried using autoapi_ignore or autoapi_options to workaround this issue https://sphinx-autoapi.readthedocs.io/en/latest/reference/config.html