valkey-cli: Count databases correctly in --cluster subcommands (valkey-io#2046)

Fixes a valkey-cli check that caused it to miscount the number of
databases and led to resharding failures. This change makes the
`--cluster` subcommands imply cluster mode as if the `-c` flag had been
given.

---------

Signed-off-by: xbasel <[email protected]>
Signed-off-by: Madelyn Olson <[email protected]>
Co-authored-by: Madelyn Olson <[email protected]>

Author: 2 people

src/valkey-cli.c

@@ -2729,6 +2729,7 @@ static int parseOptions(int argc, char **argv) {
             int err = createClusterManagerCommand(cmd, j - i, argv + i + 1);
             if (err) exit(err);
             i = j;
+            config.cluster_mode = 1;
         } else if (!strcmp(argv[i], "--cluster") && lastarg) {
             usage(1);
         } else if (!strcmp(argv[i], "--cluster-only-masters") || !strcmp(argv[i], "--cluster-only-primaries")) {