fix: correct a POSIX-sh bashism in init and document two SC2034 cases

init runs under #!/bin/sh but used $(<file) to read /etc/hostname, a bashism that breaks on a strict POSIX sh. I switched it to $(cat) and quoted $interface_up in the same script.

The two VM_IP assignments in the test scripts are read by the sourced validation.sh, which shellcheck can't follow, so they now carry a documented disable=SC2034 instead of a bare suppression. The rest of the shellcheck findings across the scripts are intentional (word-splitting on $SSH_OPTS, integer tests in [ ]) or already accepted, so I left them alone.

0 files changed, 0 insertions, 0 deletions