fix: Pass logger to differ in diff command (argoproj#17871)

So that log messages are propagated up, this caused issues for me when
trying to diagnose an issue linked to issue argoproj#17811. I've just copied the
approach used e.g. in `controller/appcontroller.go` when calling
`argodiff.NewDiffConfigBuilder`.

Sample output before this change:

    $ argocd --loglevel debug --server argocd-system.dev.aws.uw.systems app diff dev-enablement/dev-enablement

    ===== apps/Deployment dev-enablement/go-docs ======
    272c272
    <             cpu: "0"
    ---
    >             cpu: 0m
    275c275
    <             cpu: "0"
    ---
    >             cpu: 0m

Output with this change:

    $ argocd --loglevel debug --server argocd-system.dev.aws.uw.systems app diff dev-enablement/dev-enablement
    INFO[0000] Could not unmarshal to object of type apps/v1, Kind=Deployment: json: unknown field "restartPolicy"
    INFO[0000] Could not unmarshal to object of type apps/v1, Kind=Deployment: json: unknown field "restartPolicy"

    ===== apps/Deployment dev-enablement/go-docs ======
    272c272
    <             cpu: "0"
    ---
    >             cpu: 0m
    275c275
    <             cpu: "0"
    ---
    >             cpu: 0m
    INFO[0000] Could not create new object of type argoproj.io/v1alpha1, Kind=Application: no kind "Application" is registered for version "argoproj.io/v1alpha1" in scheme "pkg/runtime/scheme.go:100"
    INFO[0000] Could not create new object of type argoproj.io/v1alpha1, Kind=Application: no kind "Application" is registered for version "argoproj.io/v1alpha1" in scheme "pkg/runtime/scheme.go:100"
    INFO[0000] Could not create new object of type traefik.containo.us/v1alpha1, Kind=IngressRoute: no kind "IngressRoute" is registered for version "traefik.containo.us/v1alpha1" in scheme "pkg/runtime/scheme.go:100"
    INFO[0000] Could not create new object of type traefik.containo.us/v1alpha1, Kind=IngressRoute: no kind "IngressRoute" is registered for version "traefik.containo.us/v1alpha1" in scheme "pkg/runtime/scheme.go:100"
    INFO[0000] Could not create new object of type traefik.containo.us/v1alpha1, Kind=IngressRoute: no kind "IngressRoute" is registered for version "traefik.containo.us/v1alpha1" in scheme "pkg/runtime/scheme.go:100"
    INFO[0000] Could not create new object of type traefik.containo.us/v1alpha1, Kind=IngressRoute: no kind "IngressRoute" is registered for version "traefik.containo.us/v1alpha1" in scheme "pkg/runtime/scheme.go:100"

Signed-off-by: Matt Hughes <mhughes@uw.co.uk>

cmd/argocd/commands/app.go

@@ -50,6 +50,7 @@ import (
 	"github.com/argoproj/argo-cd/v2/util/git"
 	"github.com/argoproj/argo-cd/v2/util/grpc"
 	argoio "github.com/argoproj/argo-cd/v2/util/io"
+	logutils "github.com/argoproj/argo-cd/v2/util/log"
 	"github.com/argoproj/argo-cd/v2/util/manifeststream"
 	"github.com/argoproj/argo-cd/v2/util/templates"
 	"github.com/argoproj/argo-cd/v2/util/text/label"
@@ -1309,6 +1310,7 @@ func findandPrintDiff(ctx context.Context, app *argoappv1.Application, proj *arg
 			WithDiffSettings(app.Spec.IgnoreDifferences, overrides, ignoreAggregatedRoles).
 			WithTracking(argoSettings.AppLabelKey, argoSettings.TrackingMethod).
 			WithNoCache().
+			WithLogger(logutils.NewLogrusLogger(logutils.NewWithCurrentConfig())).
 			Build()
 		errors.CheckError(err)
 		diffRes, err := argodiff.StateDiff(item.live, item.target, diffConfig)