Sweep: Replace 'x-hack' in the third set of files

[sweep-nightly[bot]]

• In lib/functions/cli/entrypoint.sh, replace all instances of the 'x-hack' with the appropriate code.
• In lib/functions/artifacts/artifact-rootfs.sh, replace all instances of the 'x-hack' with the appropriate code.
• In lib/functions/artifacts/artifact-kernel.sh, replace all instances of the 'x-hack' with the appropriate code.
• In lib/functions/cli/commands.sh, replace all instances of the 'x-hack' with the appropriate code.
• In lib/functions/artifacts/artifact-full_firmware.sh, replace all instances of the 'x-hack' with the appropriate code.

Parent issue: #11

[sweep-nightly[bot]]

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