[Feature Request]: Provide error log for troubleshooting newJarGetter function

[stephanusb]

What would you like to happen?

I tried to run Dataflow Job in k8s job. I received the following error

  goroutine 1 [running]:
github.com/apache/beam/sdks/v2/go/pkg/beam/core/runtime/xlangx/expansionx.newJarGetter()
	/go/pkg/mod/github.com/apache/beam/sdks/[email protected]/go/pkg/beam/core/runtime/xlangx/expansionx/download.go:56 +0x23
github.com/apache/beam/sdks/v2/go/pkg/beam/core/runtime/xlangx/expansionx.init()
	/go/pkg/mod/github.com/apache/beam/sdks/[email protected]/go/pkg/beam/core/runtime/xlangx/expansionx/download.go:45 +0xf

The error returned by the user.Current() method is ignored, it hards for me to debug the issue

beam/sdks/go/pkg/beam/core/runtime/xlangx/expansionx/download.go

Line 55 in e68a79c

usr, _ := user.Current()

I wish we could check the error message for troubleshooting.

Issue Priority

Priority: 2 (default / most feature requests should be filed as P2)

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