ADM-384 Mock Server for Config

[bhan-tw]

🍐 with @Eason-T

Summary

Mock the 3rd party services for config using stubby4j.
The requests and responses are all setup, the mock server can run locally.

TODO

Need to config docker and github actions and deploy to AWS

[codacy-production]

Coverage summary from Codacy

Merging #151 (a6c233a) into main (8e50a1c) - See PR on Codacy

Coverage variation	Diff coverage
+0.00%	∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (8e50a1c)	245	245	100.00%
Head commit (a6c233a)	245 (+0)	245 (+0)	100.00% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#151)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[guzhongren]

Can we change port to 4323, coc we use 4321 and 4322