SFLOW-1: Configuring sflow collector respective to IPv4 and IPv6

[trathod1]

Following changes are made -

1. Removing explicit_interface_in_default_vrf, considering test is using non-default VRF mvrf1 for the interface.
2. Based on discussion b/290965827, refactoring the sflow collector configurations to be part of respective V4 and V6 test.
3. Script currently sending only 1M packets and expecting 1 sample with sampling-rate of 1M. This expectation from script may not be in line with sflow feature in general. Accuracy of sflow sampling increases with bigger sampling window. To achieve consistency in sampling results, following changes are done -
   - packetsToSend is updated from 1M to 10M, and ppsRate from 100k to 300k.
   - Considering increase in traffic packets, now script expecting minimum 9 samples (with tolerance) instead of only 1 sample (from 1M traffic packets) earlier.

"This code is a Contribution to the OpenConfig Feature Profiles project ("Work") made under the Google Software Grant and Corporate Contributor License Agreement ("CLA") and governed by the Apache License 2.0. No other rights or licenses in or to any of Nokia's intellectual property are granted for any other purpose. This code is provided on an "as is" basis without any warranties of any kind."

[OpenConfigBot]

Pull Request Functional Test Report for #3471 / 37477a5

Virtual Devices

Device	Test	Test Documentation	Job	Raw Log
Arista cEOS		SFLOW-1: sFlow Configuration and Sampling	2bc3988c	Log
Cisco 8000E		SFLOW-1: sFlow Configuration and Sampling	17199460	Log
Cisco XRd		SFLOW-1: sFlow Configuration and Sampling	b3ec553c	Log
Juniper ncPTX		SFLOW-1: sFlow Configuration and Sampling	937f7462	Log
Nokia SR Linux		SFLOW-1: sFlow Configuration and Sampling	e823f21b	Log
Openconfig Lemming		SFLOW-1: sFlow Configuration and Sampling	9bbb07f9	Log

Hardware Devices

Device	Test	Test Documentation	Raw Log
Arista 7808		SFLOW-1: sFlow Configuration and Sampling
Cisco 8808		SFLOW-1: sFlow Configuration and Sampling
Juniper PTX10008		SFLOW-1: sFlow Configuration and Sampling
Nokia 7250 IXR-10e		SFLOW-1: sFlow Configuration and Sampling

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[coveralls]

Pull Request Test Coverage Report for Build 11390242358

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 55.268%

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Totals
Change from base Build 11379494154:	0.0%
Covered Lines:	1983
Relevant Lines:	3588

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💛 - Coveralls

[dplore]

/fptest virtual