Supports forced use of S3 virtual-hosted style

[dicarne]

Add a configuration item to enable S3 virtual-hosted style (V2) to solve the problem caused by some S3 service providers not supporting path style (V1).

Resolves #14991

[techknowlogick]

Thanks for this PR! Could you also add the new config option to the docs (and app.ini example)? I'm on mobile, but if you need help finding where to add documentation for this please let me know and I can send a link when I'm at my computer:)

[dicarne]

Thanks for this PR! Could you also add the new config option to the docs (and app.ini example)? I'm on mobile, but if you need help finding where to add documentation for this please let me know and I can send a link when I'm at my computer:)

Okay, I added it to the documentation.

[jolheiser]

Thanks for the PR!

[silverwind]

Unit test failure looks related:

--- FAIL: TestMinioStorageIterator (0.00s)
    storage_test.go:17: 
        	Error Trace:	/home/runner/work/gitea/gitea/modules/storage/storage_test.go:17
        	            				/home/runner/work/gitea/gitea/modules/storage/minio_test.go:23
        	Error:      	Received unexpected error:
        	            	invalid minio bucket lookup type: 
        	Test:       	TestMinioStorageIterator
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
	panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x30 pc=0xa1a441]

[jolheiser]

Ah, yeah that's my bad. getDefaultStorageSection doesn't do what I thought it did. It looks like instead it may be inside getStorageForMinio

[dicarne]

gitea/modules/storage/minio_test.go

Lines 23 to 30 in db57843

	testStorageIterator(t, setting.MinioStorageType, &setting.Storage{
	MinioConfig: setting.MinioStorageConfig{
	Endpoint: "127.0.0.1:9000",
	AccessKeyID: "123456",
	SecretAccessKey: "12345678",
	Bucket: "gitea",
	Location: "us-east-1",
	},

It seems that the unit test directly assigns values to the minio configuration without going through the logic of assigning default values.