Fix cleanup issues of bond interface

[FarooqAbdulla02]

This code fixes the cleanup issues of bonding interfaces by flushing the IP address using nmcli command and restoring back the original IP cnfiguration file.

[FarooqAbdulla02]

root@ltcden7-lp5-test:/avocado-fvt-wrapper/tests/avocado-misc-tests/io/net# avocado run bonding.py -m bonding.py.data/bonding_virtual.yaml --execution-order tests-per-variant --max-parallel-tasks=1
JOB ID : d82c84a487d7c97de020a46984ebc761991825f5
JOB LOG : /root/avocado-fvt-wrapper/results/job-2024-10-13T12.03-d82c84a/job.log
(1/6) bonding.py:Bonding.test_setup;run-Test-active-backup-1a2b: STARTED
(1/6) bonding.py:Bonding.test_setup;run-Test-active-backup-1a2b: PASS (21.34 s)
(2/6) bonding.py:Bonding.test_run;run-Test-active-backup-1a2b: STARTED
(2/6) bonding.py:Bonding.test_run;run-Test-active-backup-1a2b: PASS (339.05 s)
(3/6) bonding.py:Bonding.test_cleanup;run-Test-active-backup-1a2b: STARTED
(3/6) bonding.py:Bonding.test_cleanup;run-Test-active-backup-1a2b: PASS (18.93 s)
(4/6) bonding.py:Bonding.test_setup;run-Test-802.3ad-a167: STARTED
(4/6) bonding.py:Bonding.test_setup;run-Test-802.3ad-a167: PASS (21.11 s)
(5/6) bonding.py:Bonding.test_run;run-Test-802.3ad-a167: STARTED
(5/6) bonding.py:Bonding.test_run;run-Test-802.3ad-a167: PASS (338.87 s)
(6/6) bonding.py:Bonding.test_cleanup;run-Test-802.3ad-a167: STARTED
(6/6) bonding.py:Bonding.test_cleanup;run-Test-802.3ad-a167: PASS (19.02 s)
RESULTS : PASS 6 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | CANCEL 0
JOB HTML : /root/avocado-fvt-wrapper/results/job-2024-10-13T12.03-d82c84a/results.html
JOB TIME : 782.10 s
root@ltcden7-lp5-test:/avocado-fvt-wrapper/tests/avocado-misc-tests/io/net# cat bonding.py.data/bonding_virtual.yaml
Test: !mux
active-backup:
bonding_mode: "1"
802.3ad:
bonding_mode: "4"
bond_interfaces: "env9 env10"
host_ips: "192.168.101.102 192.168.201.102"
netmask: "255.255.255.0"
peer_ips: "192.168.101.175 192.168.201.175"
peer_interfaces: "env10 env8"
peer_public_ip: "9.53.174.1x"
peer_password: "xxxx"
bond_name: "bondtest"
user_name: "root"
peer_bond_needed: False
peer_wait_time: "20"
sleep_time: "10"
mtu: "1500"
fail_over_mac: "0"

Note: currently changes supports only for local bond interfaces, and "peer_bond_needed" should be "False"

[abdhaleegit]

@FarooqAbdulla02 so you will be sending separate PR for nm_flush_ipaddr ?

[abdhaleegit]

waiting for avocado-framework/avocado#6042

[abdhaleegit]

LGTM