Mizar unittests are not passing

[Hong-Chang]

In Mizar, to execute unit tests, the command is "make run_unittests".

In dev-next branch, after run "make run_unittests", gets following result:
[ FAILED ] test_trn_cli_delete_agent_network_policy_protocol_port_subcmd
[==========] 31 test(s) run.
[ PASSED ] 21 test(s).
[ FAILED ] 10 test(s), listed below:
[ FAILED ] test_trn_cli_load_transit_subcmd
[ FAILED ] test_trn_cli_load_agent_subcmd
[ FAILED ] test_trn_cli_update_transit_network_policy_subcmd
[ FAILED ] test_trn_cli_update_agent_network_policy_subcmd
[ FAILED ] test_trn_cli_delete_transit_network_policy_subcmd
[ FAILED ] test_trn_cli_delete_agent_network_policy_subcmd
[ FAILED ] test_trn_cli_update_transit_network_policy_protocol_port_subcmd
[ FAILED ] test_trn_cli_update_agent_network_policy_protocol_port_subcmd
[ FAILED ] test_trn_cli_delete_transit_network_policy_protocol_port_subcmd
[ FAILED ] test_trn_cli_delete_agent_network_policy_protocol_port_subcmd

10 FAILED TEST(S)

=================================================================
==931026==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 64 byte(s) in 1 object(s) allocated from:
#0 0x55c7f9a90a65 in __interceptor_malloc (/home/ubuntu/go/src/k8s.io/mizar/build/tests/test_cli+0x24a65)
#1 0x55c7f9aed942 in cJSON_New_Item src/extern/cJSON.c:214
#2 0x55c7f9aed942 in cJSON_ParseWithOpts src/extern/cJSON.c:1029
#3 0x55c7f9aed942 in cJSON_Parse src/extern/cJSON.c:1092
#4 0x55c7f9ad3e07 in trn_cli_parse_json src/cli/trn_cli_common.c:29
#5 0x55c7f9add107 in trn_cli_delete_transit_network_policy_protocol_port_subcmd src/cli/trn_cli_network_policy.c:588
#6 0x55c7f9abfc8c in test_trn_cli_delete_transit_network_policy_protocol_port_subcmd src/cli/test/test_cli.c:3014
#7 0x7fe901a52c17 (/usr/lib/x86_64-linux-gnu/libcmocka.so.0+0x4c17)
......

The tips to run single unit test:

• In src/cli/test/test_cli.c, in last part of the code, comment out all other test cases and only leave one case to run.
• Can use printf to see why it's failing.

[clu2xlu]

@phudtran this commit fcd97a0
caused failure for:
[ FAILED ] test_trn_cli_load_transit_subcmd
[ FAILED ] test_trn_cli_load_agent_subcmd