*: explicitly print "exit" at the end of every node config

There is a possibility that the same line can be matched as a command in
some node and its parent node. In this case, when reading the config,
this line is always executed as a command of the child node.

For example, with the following config:
```
router ospf
 network 193.168.0.0/16 area 0
!
mpls ldp
 discovery hello interval 111
!
```
Line `mpls ldp` is processed as command `mpls ldp-sync` inside the
`router ospf` node. This leads to a complete loss of `mpls ldp` node
configuration.

To eliminate this issue and all possible similar issues, let's print an
explicit "exit" at the end of every node config.

This commit also changes indentation for a couple of existing exit
commands so that all existing commands are on the same level as their
corresponding node-entering commands.

Fixes #9206.

Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/isisd/isis_nb.c b/isisd/isis_nb.c
index ecad16229..f62a8d481 100644
--- a/isisd/isis_nb.c
+++ b/isisd/isis_nb.c
@@ -32,6 +32,7 @@ const struct frr_yang_module_info frr_isisd_info = {
 			.xpath = "/frr-isisd:isis/instance",
 			.cbs = {
 				.cli_show = cli_show_router_isis,
+				.cli_show_end = cli_show_router_isis_end,
 				.create = isis_instance_create,
 				.destroy = isis_instance_destroy,
 			},