big_sip TC fails due to invalid monit status on SONIC 202006

[dpetryshintl]

Description:

Big_sip test case fails on Monit check for sflow|sflowmgrd feature, getting fault status "Does not exist", though the real status of the feature is "disabled" (which is correct according with it's default state).

Steps to reproduce the issue:

1. Install SONIC 202006
2. Deploy t0 topology on Montara
3. Run big_sip test case

Describe the results you received:

Status of TC: FAILURE

[
    {
    "check_item": "monit", 
    "failed": true, 
    "services_status": {
        "sonic": "Running", 
        "neighsyncd": "Running", 
        "vrfmgrd": "Running", 
        "telemetry": "Running", 
        "dialout_client": "Running", 
        "portmgrd": "Running", 
        "buffermgrd": "Running", 
        "zebra": "Running", 
        "rsyslog": "Running", 
        "snmpd": "Running", 
        "lldp_syncd": "Running", 
        "redis_server": "Running", 
        "vlanmgrd": "Running", 
        "bgpcfgd": "Running", 
        "snmp_subagent": "Running", 
        "intfmgrd": "Running", 
        "orchagent": "Running", 
        "root-overlay": "Accessible", 
        "vxlanmgrd": "Running", 
        "lldpd_monitor": "Running", 
        "portsyncd": "Running", 
        "fpmsyncd": "Running", 
        "sflowmgrd": "Does not exist", 
        "var-log": "Accessible", 
        "lldpmgrd": "Running", 
        "bgpd": "Running", 
        "syncd": "Running", 
        "nbrmgrd": "Running", 
        "staticd": "Running"
    }
}
]

Describe the results you expected:

TC big_pic passed