utils: Allow to remove values from sysrepo

Allow removing nodes in valuesPush so we can change and/or remove some
values from Sysrepo in one go.

The deletion of a node is implemented as NETCONF (RFC 6241 [1]) "remove"
operation. The remove operation deletes the data if present. If not, the
operation is a no-op.
If "delete" operation was used, the data would be removed (if present)
too. But if the data are not present it would result in an error [1].

We'd like to avoid the error without implementing a function that checks
if the data are present (see next commits).

[1] https://tools.ietf.org/html/rfc6241#page-38

Change-Id: Id4a0a83265f36a7bdac30a1c2d8247d25551d598
5 files changed
tree: 29a2e35e6b7940b9fcf7a9e1ef3a821d7cd222de
  1. .clang-format
  2. .gitmodules
  3. .zuul.CzechLight-internal.yaml
  4. .zuul.public.yaml
  5. CMakeLists.txt
  6. Doxyfile.in
  7. LICENSE
  8. LICENSE.md
  9. README.md
  10. ci/
  11. cmake/
  12. docs/
  13. src/
  14. tests/
  15. yang/
README.md

YANG System management for embedded devices running Linux

Together with sysrepo, this software provides "general system management" of embedded devices. The target platform is anything that runs Linux with systemd. This runs in production on CzechLight SDN DWDM devices.

Health tracking

This component tracks the overal health state of the system, including various sensors, or the state of systemd units. As an operator-friendly LED at the front panel of the appliance shows the aggregated health state.

System management

Firmware can be updated via RAUC, and various aspects of the system's configuration can be adjusted. This includes a firewall, basic network settings, and authentication management.

Supported YANG models

For a full list, consult the yang/ directory in this repository.