Add support for creating tunnel and tunnel encap next hops

[github-actions[bot]]

Pull Request Test Coverage Report for Build 8012236171

Details

• -21 of 106 (80.19%) changed or added relevant lines in 6 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.01%) to 2.609%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
dataplane/forwarding/fwdconfig/action.go	6	10	60.0%
dataplane/forwarding/protocol/metadata/metadata.go	0	5	0.0%
dataplane/saiserver/tunnel.go	42	54	77.78%
<!--	Total:	85	106	80.19%	-->

Files with Coverage Reduction	New Missed Lines	%
bgp/gobgp.go	2	52.72%
<!--	Total:	2		-->

Totals
Change from base Build 7981756597:	0.01%
Covered Lines:	16957
Relevant Lines:	650004

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💛 - Coveralls