[installer] Add config validation

[mrsimonemms]

Description

Validate the given configuration

Related Issue(s)

Fixes #6102

How to test

go run . validate config --config /path/to/config.yaml

This also can be done with go run . render --config /path/to/config.yaml

Release Notes

Installation config validation

Documentation

[mrsimonemms]

I've decided to keep validating the database/object store until after I've got these connecting to GCP, which is my next job

[mrsimonemms]

/assign @csweichel

[princerachit]

I am seeing an error while running the command:

gitpod /workspace/gitpod/installer $ go run . -v validate config --config example-config.yaml 
Error: unknown command "config" for "gitpod-installer"
Run 'gitpod-installer --help' for usage.
Error: unknown command "config" for "gitpod-installer"
exit status 1

[mrsimonemms]

@princerachit Replace go run . -v validate config --config example-config.yaml with go run . validate config --config example-config.yaml - there's a -v in there that's breaking things for you (I think)

[princerachit]

/lgtm

[roboquat]

LGTM label has been added.

Git tree hash: 87815dad1231ba9e4aa8976158f614423c626487

[codecov]

Codecov Report

Merging #6265 (35380f0) into main (7623c5f) will decrease coverage by 2.13%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##            main   #6265      +/-   ##
========================================
- Coverage   8.21%   6.08%   -2.14%     
========================================
  Files         12      10       -2     
  Lines       1022     854     -168     
========================================
- Hits          84      52      -32     
+ Misses       934     800     -134     
+ Partials       4       2       -2     

Flag	Coverage Δ
components-local-app-app-linux-amd64	?
components-local-app-app-linux-arm64	?
components-local-app-app-windows-386	?
components-local-app-app-windows-amd64	?
components-local-app-app-windows-arm64	?
installer-app	6.08% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
components/local-app/pkg/auth/pkce.go
components/local-app/pkg/auth/auth.go

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[csweichel]

/lgtm

[roboquat]

LGTM label has been added.

Git tree hash: c040def9fb4b18ed23989477a4e4e336f4b62d57

[roboquat]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: csweichel, princerachit

Associated issue: #6102

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• installer/OWNERS [csweichel,princerachit]

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