Specify nrext64 option when creating XFS filesystem #1975

Job	Run time
checks_with_udev (RUST_LOG=stratisd=debug make -f Makefile test-loop, 1.74.0, cargo)	14m 24s
checks (make -f Makefile clippy, 1.74.0, clippy)	2m 30s
checks (PROFILEDIR=debug make -f Makefile build, 1.74.0, cargo)	2m 3s
checks (PROFILEDIR=debug make -f Makefile build-min, 1.74.0, cargo)	1m 57s
checks (PROFILEDIR=debug make -f Makefile build-no-ipc, 1.74.0, cargo)	1m 46s
checks (PROFILEDIR=debug make -f Makefile stratis-dumpmetadata, 1.74.0, cargo)	1m 43s
checks (make -f Makefile docs-ci, 1.74.0, cargo)	1m 48s
checks (make -f Makefile test, 1.74.0, cargo)	2m 24s
checks (TANG_URL=localhost make -f Makefile test-clevis-loop-should-fail, 1.74.0, cargo)	2m 8s
checks (make -f Makefile build, 1.74.0, cargo)	2m 39s
checks (make -f Makefile build-min, 1.74.0, cargo)	2m 24s
checks (make -f Makefile build-no-ipc, 1.74.0, cargo)	2m 15s
	38m 1s

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