Upgrade go mod default: k8s.io/xxx v0.18.8

[rinx]

Description:

Upgraded k8s libs to v0.18.8.
(also added k8s.io/metrics lib)

Fixed Makefile: compatible with macOS.

Related Issue:

Nothing.

How Has This Been Tested?:

Nothing.

Environment:

• Go Version: 1.14.4
• Docker Version: 19.03.8
• Kubernetes Version: 1.18.2
• NGT Version: 1.12.0

Types of changes:

• Bug fix [type/bug]
• New feature [type/feature]
• Add tests [type/test]
• Security related changes [type/security]
• Add documents [type/documentation]
• Refactoring [type/refactoring]
• Update dependencies [type/dependency]
• Update benchmarks and performances [type/bench]
• Update CI [type/ci]

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
• Have you successfully ran tests with your changes locally?

Checklist:

• I have read the CONTRIBUTING document.
• I have checked open Pull Requests for the similar feature or fixes?
• I have added tests and benchmarks to cover my changes.
• I have ensured all new and existing tests passed.
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly.

[pull-assistant]

Best reviewed: commit by commit

---

Optimal code review plan

     ⬆️ use k8s.io/* v0.18.8

     ⬆️ update go.mod, go.sum

     🐛 fix pre-commit hook

     🐛 fix Makefile: compatible with macOS

     💚 run builds and tests when go.mod and go.sum updated

     ✅ fix tests: internal/version

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[vdaas-ci]

[CHATOPS:HELP] ChatOps commands.

• 🙆‍♀️ /approve - approve
• 💌 /changelog - add changelog comment
• 🍱 /format - format codes and add licenses
• ✅ /gen-test - generate test codes
• 🏷️ /label - add labels
• ⏪ /rebase - rebase master

[rinx]

/rebase
/format

[vdaas-ci]

[REBASE] Rebase triggered by rinx for branch: dependencies/upgrade-go-mod-default

[vdaas-ci]

[FORMAT] Updating license headers and formatting go codes triggered by rinx.

[codecov]

Codecov Report

Merging #645 into master will increase coverage by 3.15%.
The diff coverage is 67.75%.

@@            Coverage Diff             @@
##           master     #645      +/-   ##
==========================================
+ Coverage   12.19%   15.35%   +3.15%     
==========================================
  Files         409      412       +3     
  Lines       21340    21600     +260     
==========================================
+ Hits         2602     3316     +714     
+ Misses      18454    18027     -427     
+ Partials      284      257      -27     

Impacted Files	Coverage Δ
internal/compress/gzip_option.go	84.61% <ø> (+15.38%)	⬆️
internal/compress/lz4_option.go	84.61% <ø> (+15.38%)	⬆️
internal/config/mysql.go	43.47% <0.00%> (-56.53%)	⬇️
internal/config/redis.go	0.00% <0.00%> (ø)
internal/db/rdb/mysql/mysql.go	0.00% <0.00%> (ø)
internal/errors/net.go	0.00% <ø> (ø)
internal/info/info.go	29.16% <ø> (ø)
internal/observability/trace/trace.go	0.00% <ø> (ø)
internal/worker/queue_option.go	100.00% <ø> (+84.21%)	⬆️
pkg/manager/backup/mysql/service/mysql.go	0.00% <ø> (ø)
... and 58 more

---

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