feat!: config management and error handling

[mabdh]

Tasks

• Error handling when cli config not found, for api that does not need config, could still do the call, otherwise return warning
• Loading config for client init, pick from the root, but the flag could override it
• Loading protos from proton based on a commit in Makefile
• Namespacing server commands
• Init for server config

Error handling in client config
The existence of $ODPF_CONFIG_DIR/shield.yaml

• If user does not have this file in the path
  • calling shield client cli without --host would throw error need a config or flag --host
  • calling shield client cli that not requires auth
    • with --host would pass
  • calling shield cli that requires auth
    • with --host would return --header is required (we mark this as required)
    • with --host and --header would pass

Some changes in cli

+ shield config init // initializing client config
+ shield config list // list down client configurations
+ shield server init // initializing server config

- shield serve
+ shield server start

- shield migrate
+ shield server migrate

- shield migrate-rollback
+ shield server migrate-rollback

[coveralls]

Pull Request Test Coverage Report for Build 2887124987

• 319 of 482 (66.18%) changed or added relevant lines in 13 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-1.7%) to 49.195%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
cmd/client.go	19	23	82.61%
cmd/user.go	15	24	62.5%
cmd/action.go	15	25	60.0%
cmd/context.go	0	10	0.0%
cmd/group.go	14	24	58.33%
cmd/namespace.go	14	24	58.33%
cmd/policy.go	15	25	60.0%
cmd/project.go	15	25	60.0%
cmd/role.go	15	25	60.0%
cmd/organization.go	20	39	51.28%

Totals
Change from base Build 2866460769:	-1.7%
Covered Lines:	3454
Relevant Lines:	7021

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💛 - Coveralls

[ravisuhag]

@mabdh Let's also move the shield sample config file to the config package itself and call it config.yaml Ideally, we would want to encourage the behavior of using shield server init to generate server config and not manually copy-paste the file.