Updated KUTTL E2Es for POSIX standard shells

[tjmoore4]

Overall reference

• https://www.gnu.org/software/bash/manual/html_node/Major-Differences-From-The-Bourne-Shell.html

Some specific items include:

Double equals ('==') not supported by all POSIX shells.

• https://www.shellcheck.net/wiki/SC3014

printf %q not supported by all POSIX shells.

• https://ss64.com/bash/printf.html
• https://www.shellcheck.net/wiki/SC3050

arithmetic for loops are undefined

• https://www.shellcheck.net/wiki/SC3005

regex matching (=~) is undefined

• https://www.shellcheck.net/wiki/SC3015

cannot match globs in [..]

• https://www.shellcheck.net/wiki/SC2081

cannot use logical operators in [..]

• https://www.shellcheck.net/wiki/SC2107

Issue: PGO-716