Fix parsing command line arguments

Adjust correctly the *optstring argument of getopt_long. Add support
for a missing option -v|--verbose and drop unknown options -D, -I and -L.

install/dracut-install.c

@@ -619,7 +619,7 @@ static int parse_argv(int argc, char *argv[])
                 {NULL, 0, NULL, 0}
         };
 
-        while ((c = getopt_long(argc, argv, "adhloD:DHILR", options, NULL)) != -1) {
+        while ((c = getopt_long(argc, argv, "adhloD:HR", options, NULL)) != -1) {
                 switch (c) {
                 case ARG_VERSION:
                         puts(PROGRAM_VERSION_STRING);