chore: configure current repository as a version

And use it as default version.

To this end, the scripts in bin/hardening have been made generic by removing the associated recommendation number.
Only impact is if you are used to execute scripts directly from bin/hardening.
In this case, please use the "bin/hardening.sh" wrapper as intended.

I had to rename 2.3.1_disable_nis.sh to uninstall_nis.sh, as it was conflicting with 2.3.1_disable_nis.sh

Also, there was a doublon between 1.1.1.8_disable_cramfs.sh and 99.1.1.1_disable_cramfs.sh ; the former was kept

tests/hardening/find_ungrouped_files.sh

@@ -0,0 +1,41 @@
+# shellcheck shell=bash
+# run-shellcheck
+test_audit() {
+    describe Running void to generate the conf file that will later be edited
+    # shellcheck disable=2154
+    "${CIS_CHECKS_DIR}/${script}.sh" || true
+    # shellcheck disable=2016
+    echo 'EXCLUDED="$EXCLUDED ^/home/secaudit/6.1.12/.*"' >>"${CIS_CONF_DIR}/conf.d/${script}.cfg"
+    mkdir /home/secaudit/6.1.12/
+    touch /home/secaudit/6.1.12/test
+    chown 1200:1200 /home/secaudit/6.1.12/test
+
+    describe Running on blank host
+    register_test retvalshouldbe 0
+    register_test contain "No ungrouped files found"
+    # shellcheck disable=2154
+    run blank "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe Tests purposely failing
+    local targetfile="/home/secaudit/ungrouped"
+    touch "$targetfile"
+    chown 1200:1200 "$targetfile"
+    register_test retvalshouldbe 1
+    register_test contain "Some ungrouped files are present"
+    run noncompliant "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe Tests failing with find ignore flag
+    echo 'FIND_IGNORE_NOSUCHFILE_ERR=true' >>"${CIS_CONF_DIR}/conf.d/${script}.cfg"
+    register_test retvalshouldbe 1
+    register_test contain "Some ungrouped files are present"
+    run noncompliant "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe correcting situation
+    sed -i 's/audit/enabled/' "${CIS_CONF_DIR}/conf.d/${script}.cfg"
+    "${CIS_CHECKS_DIR}/${script}.sh" --apply || true
+
+    describe Checking resolved state
+    register_test retvalshouldbe 0
+    register_test contain "No ungrouped files found"
+    run resolved "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+}