* Fix rollback in junos_config
Fixes#30778
* Call `load_configuration` with rollback id in case
the id is given as input
* Pass rollback id to `get_diff()` to fetch diff from device
* Fix unit test
* junos_linkagg implementation and junos modules refactor
* junos_linkagg implementation
* junos_linkagg integration test
* net_linkagg integration test for junos
* decouple `load_config` and `commit` operations,
to allow single commit (in case on confirm commit) and
to perform batch commit (multiple `load_config` followed by single
`commit`)
* Other related refactor
* Fix CI issues
* Fix unit test failure
When using AWS we have to use the full domain name in the inventory file, which
we rather than the short name. This change avoids that ending up being
set in the tests.
