TE-16.3 - fix for transport and subtest-8

[singh-prem]

1. Added changes to add loopback address as transport address for vendor=cisco

2. Deleted code from TC-8 which is not correct as per readme. Added code to delete tunnel prefixes from niTEVRF222 such that traffic falls to backup path that leads to decap and lookup.

[OpenConfigBot]

Pull Request Functional Test Report for #3452 / 788edf5ff576ab7c708d0d891b1c05309480e899

Virtual Devices

Device	Test	Test Documentation	Job	Raw Log
Arista cEOS		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios
Cisco 8000E		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios
Cisco XRd		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios
Juniper ncPTX		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios
Nokia SR Linux		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios
Openconfig Lemming		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios

Hardware Devices

Device	Test	Test Documentation	Raw Log
Arista 7808		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios
Cisco 8808		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios
Juniper PTX10008		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios
Nokia 7250 IXR-10e		TE-16.2: encapsulation FRR scenarios TE-16.3: encapsulation FRR scenarios

Help

[gggsmith]

@singh-prem could you please resolve the conflicts? thank you!