Shellcheck -oall warnings fixed:
- exit 1 if `cd tests` failes (SC2164)
- Double quote `./${atest}` to prevent globbing and word splitting. (SC2086)
- Check the test exit code directly intead of using $? (SC2181)
Other fixes:
- The shebang sould traditionally be /usr/bin/env sh in case
sh is not located in /bin.
- Do not remove tests.log for every test.
Signed-off-by: Adam Duskett <adam.duskett@amarulasolutions.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>