Add missing version compare function

ur/fortinet.vpn.v7.sh

@@ -167,6 +167,31 @@ ${RED}${local_command_available_cmd}${COLOR_DEBUG} is not available on this host
 	return "${return_command_available}"
 }
 # }}}
+is_version_greater_than() {                                     # {{{
+
+	first_value="${1}"
+	value_to_compare="${2}"
+
+	## Return False by default
+	return_is_version_greater_than="1"
+
+	debug_message "is_version_greater_than − \
+Is first value (${first_value}) greater than the second value (${value_to_compare})."
+
+	if printf '%s\n' "${first_value}" "${value_to_compare}" | sort --check=quiet --version-sort; then
+		debug_message "is_version_greater_than − ${first_value} <= ${value_to_compare} ."
+		return_is_version_greater_than="1"
+	else
+		debug_message "is_version_greater_than − ${first_value} > ${value_to_compare} ."
+		return_is_version_greater_than="0"
+	fi
+
+	unset first_value
+	unset value_to_compare
+
+	return "${return_is_version_greater_than}"
+}
+# }}}
 
 main() {                                                        # {{{