Prevent local absolute paths from being entered in App config

[nakabonne]

What this PR does / why we need it:
This PR solves the problem where Piped would specify a local absolute path as GitPath when reporting a Git-defined Config to Control-plane.

Which issue(s) this PR fixes:

Close #2806

Does this PR introduce a user-facing change?:

NONE

[pipecd-bot]

Unabled to get changed files of pull request.

Details

Error: rpc error: code = NotFound desc = not found

[pipecd-bot]

Code coverage for golang is 31.99%. This pull request increases coverage by 0.00%.

File	Function	Base	Head	Diff
pkg/app/piped/appconfigreporter/appconfigreporter.go	Reporter.findRegisteredApps	90.00%	90.48%	+0.48%
pkg/app/piped/appconfigreporter/appconfigreporter.go	Reporter.readApplicationInfo	76.92%	75.00%	-1.92%

[nghialv]

Or appDirPath, cfgFileRelPath

[nghialv]

Sorry, it should be repoDir, appDirRelPath, cfgFilename

[nghialv]

I mean we should use the same thing in our code and data in db, they are appPath and cfgFilename, and repoDir is added for dealing with the local file system.

[nakabonne]

@nghialv Applied! PTAL

[nghialv]

Looks nice.
/lgtm

[pipecd-bot]

Code coverage for golang is 31.98%. This pull request decreases coverage by -0.00%.

File	Function	Base	Head	Diff
pkg/app/piped/appconfigreporter/appconfigreporter.go	Reporter.readApplicationInfo	76.92%	75.00%	-1.92%

[khanhtc1202]

Nice
/approve

[pipecd-bot]

This pull request is APPROVED by khanhtc1202.

Approvers can cancel the approval by writing /approve cancel in a comment. Any additional commits also will change this pull request to be not-approved.