Format fixes for all go file

[hdwhdw]

Why I did it

Format fixes is good. Plus, this prevents any tools automatically adding format fixes in features PRs.

How I did it

gofmt -w .

How to verify it

check_gotest

Which release branch to backport (provide reason below if selected)

• [ ] 201811
• [ ] 201911
• [ ] 202006
• [ ] 202012
• [ ] 202106
• [ ] 202111

Description for the changelog

Link to config_db schema for YANG module changes

A picture of a cute animal (not mandatory but encouraged)

[linux-foundation-easycla[bot]]

The committers listed above are authorized under a signed CLA.

• :white_check_mark: login: hdwhdw / name: Dawei Huang (e933d949f127ef88dd8d8712e3a387624b5e49c8, b37ac149de539dc5c2138d3323fba71a691d359b, 94931b7ad71420113f704523238dc7a9e2cdd3f5, a85da7ee9b93d4b4e508bff39271934a77a8d7ab)

[hdwhdw]

Getting dirty. Let's redo it.