IC:2021-05-18, cfe and osal

Combines:

nasa/cFE#1508, cFE v6.8.0-rc1+dev580
nasa/osal#1006, osal v5.1.0-rc1+dev452

Includes:

nasa/cFE#1482, Resolve sequence count auto-increment rollover bug
nasa/cFE#1491, Correctly format code block section terminator
nasa/cFE#1530, Fix typos in developer guide

nasa/osal#985, rename hooks to handlers
nasa/osal#1000, propagate status code in OS_rmdir
nasa/osal#1001, rework "unit-tests" to use macros
nasa/osal#1003, remove extra newlines in utassert logs
nasa/osal#990, Add test for object id inline functions
nasa/osal#998, fixed invalid inputs for OS_mkdir
nasa/osal#812, Improves config guide documentation
nasa/osal#987, Show CodeQL Preview

Co-Authored-By: Jake Hageman <skliper@users.noreply.github.com>
Co-Authored-By: Joseph Hickey <joseph.p.hickey@nasa.gov>
Co-Authored-By: Ariel Adams <ArielSAdamsNASA@users.noreply.github.com>
Co-Authored-By: Alex Campbell <zanzaben@users.noreply.github.com>
Co-Authored-By: Tobias Nießen <tniessen@users.noreply.github.com>
Co-Authored-By: Jonathan Bohren <jbohren-hbr@users.noreply.github.com>
Co-Authored-By: Andrei Tumbar <Kronos3@users.noreply.github.com>

Author: 8 people