[BUG] PostBuild.sh script's "NO TMPFS" option can make script go out to lunch

[ferricoxide]

Describe the bug

Depending on flag-ordering, specifying the --no-tmpfs toggle-flag can make the PostBuild.sh script hang during command-line argument-processing

Severity

Nuisance: this flag is rarely used.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

Specification of flag results in AMI being built without the tmp.mount option being activated.

Deviance Description

Script hangs during option-parsing.

Fix Suggestions

Fix option-handling in:

       --no-tmpfs)
             NOTMPFS="true"
             ;;

Section (lines 501-503). Presumably add a shift statement before the switch-option stanza-close.