libceph: remove debugfs files before client teardown

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ceph/ceph_common.c"
                    ],
                    "versions": [
                        {
                            "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
                            "lessThan": "ac78549d186090ee7125d28c3a8c376573b36194",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
                            "lessThan": "463a264e9094384112a5c8b46f0a9ddaf8566904",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
                            "lessThan": "fe46b7e06f14f6f94766832df309b249cb689d27",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
                            "lessThan": "fc1010e7e0204ece6cc0f9af4f473e9553535eab",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
                            "lessThan": "d3dc8889d39a676bf840132bd5c5c48cb0daba23",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
                            "lessThan": "8f5a3abc54ba24dbceb14cc3a719908c4f688091",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
                            "lessThan": "b9fedda2f628e030384228de0dafc574b7fb0c2f",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "76aa844d5b2fb8c839180d3f5874e333b297e5fd",
                            "lessThan": "e4c804726c4afce3ba648b982d564f6af2cfa328",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "net/ceph/ceph_common.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.34",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.34",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.265",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.216",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.183",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.148",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.101",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.42",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.6",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }