Merge pull request #1844 from buildtesters/remove_ci_from_nersc

remove logic for CI implementation at NERSC along with test files that

Merge pull request #1843 from buildtesters/dev-traversal_limit

add regression test using example configuration file with file_traversal_limit set to 1 and run

pass file traversal limit in walk_tree method when using 'buildtest buildspec find'

finish buildtest build imple

Merge pull request #1839 from buildtesters/remove_outdated_docs

remove facility examples page since its outdated

Merge pull request #1838 from buildtesters/fix_slurm_job_submission

[pre-commit.ci] auto fixes from pre-commit.com hooks

fix bug with job submission to slurm where build script was not

Merge pull request #1837 from buildtesters/remove_buildtest_schema_command

fix issue with another reference to 'buildtest schema' which needs to be removed in documentation

update documentation by removing schema page

remove 'buildtest schema' command from argparse