make sure that necessary quotes are retained for --fusemount "..." option in output produced by eessi_container.sh

[boegel]

Basic tests (+ CI we have for this script) shows it still works as expected, and now shows double quotes for --fusemount option in output:

$ ./eessi_container.sh
Using /tmp/eessi.IlIzx9UzvZ as tmp directory (to resume session add '--resume /tmp/eessi.IlIzx9UzvZ').
Pulling container image from docker://ghcr.io/eessi/build-node:debian12 to /tmp/eessi.IlIzx9UzvZ/ghcr.io_eessi_build_node_debian12.sif
...
Mounting 'software.eessi.io' 'read-only' without fuse-overlayfs.
Launching container with command (next line):
singularity -q shell  --fusemount "container:cvmfs2 software.eessi.io /cvmfs/software.eessi.io" /tmp/eessi.IlIzx9UzvZ/ghcr.io_eessi_build_node_debian12.sif
CernVM-FS: pre-mounted on file descriptor 3
Apptainer> CernVM-FS: loading Fuse module... done

Apptainer> ls /cvmfs/software.eessi.io/versions/
2023.06  2025.06  2026.06

$ ./eessi_container.sh --access rw
Using /tmp/eessi.7zXeg0exUt as tmp directory (to resume session add '--resume /tmp/eessi.7zXeg0exUt').
Pulling container image from docker://ghcr.io/eessi/build-node:debian12 to /tmp/eessi.7zXeg0exUt/ghcr.io_eessi_build_node_debian12.sif
...
Launching container with command (next line):
singularity -q shell  --fusemount "container:cvmfs2 software.eessi.io /cvmfs_ro/software.eessi.io" --fusemount "container:unionfs -o cow /tmp/software.eessi.io/overlay-upper=RW:/cvmfs_ro/software.eessi.io=RO /cvmfs/software.eessi.io" /tmp/eessi.7zXeg0exUt/ghcr.io_eessi_build_node_debian12.sif

[Micket]

Suggested change

	EESSI_FUSE_MOUNTS+=("--fusemount" '"container:cvmfs2 cvmfs-config.cern.ch /cvmfs/cvmfs-config.cern.ch"')
	EESSI_FUSE_MOUNTS+=("--fusemount" "\"container:cvmfs2 cvmfs-config.cern.ch /cvmfs/cvmfs-config.cern.ch\"")

For consistency?

[boegel]

Meh, I figured I could avoid escaping the double quotes here, since there's no ${EESSI*} environment variable involved here, I would keep it as is.