Only add supported features during pool creation

When creating a pool only features supported by both user and
kernel space should be enabled.  Furthermore, improve the error
messages when attempting to create, or add, a dRAID vdev when
the dRAID feature is not supported by the kernel modules.

Reviewed-by: Mark Maybee <mark.maybee@delphix.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #11492

cmd/zpool/zpool_main.c

@@ -1653,7 +1653,8 @@ zpool_do_create(int argc, char **argv)
 				if (strcmp(propval, ZFS_FEATURE_DISABLED) == 0)
 					(void) nvlist_remove_all(props,
 					    propname);
-			} else if (enable_all_pool_feat) {
+			} else if (enable_all_pool_feat &&
+			    feat->fi_zfs_mod_supported) {
 				ret = add_prop_list(propname,
 				    ZFS_FEATURE_ENABLED, &props, B_TRUE);
 				if (ret != 0)