Remove base path checks during sync (#576)

## Changes
Earlier we removed recursive deletion from sync. This makes it safe
enough for us to not restrict sync to just the namespace of the user.

This PR removes that base path validation. 

Note: If the sync destination is under `/Repos` we still only create
missing directories required if the path is under my namespace ie
matches `/Repos/@me/`

## Tests
Manually

Before:
```
shreyas.goenka@THW32HFW6T hello-bundle % cli bundle deploy
Starting upload of bundle files
Error: path must be nested under /Users/shreyas.goenka@databricks.com or /Repos/shreyas.goenka@databricks.com
```

After:
```
shreyas.goenka@THW32HFW6T hello-bundle % cli bundle deploy
Starting upload of bundle files
Uploaded bundle files at /Shared/common-test/hello-bundle/files!

Starting resource deployment
Resource deployment completed!
```

libs/sync/path.go

@@ -13,42 +13,6 @@ import (
 	"github.com/databricks/databricks-sdk-go/service/workspace"
 )
 
-// Return if the child path is nested under the parent path.
-func isPathNestedUnder(child, parent string) bool {
-	child = path.Clean(child)
-	parent = path.Clean(parent)
-
-	// Traverse up the tree as long as "child" is contained in "parent".
-	for len(child) > len(parent) && strings.HasPrefix(child, parent) {
-		child = path.Dir(child)
-		if child == parent {
-			return true
-		}
-	}
-	return false
-}
-
-// Check if the specified path is nested under one of the allowed base paths.
-func checkPathNestedUnderBasePaths(me *iam.User, p string) error {
-	validBasePaths := []string{
-		path.Clean(fmt.Sprintf("/Users/%s", me.UserName)),
-		path.Clean(fmt.Sprintf("/Repos/%s", me.UserName)),
-	}
-
-	givenBasePath := path.Clean(p)
-	match := false
-	for _, basePath := range validBasePaths {
-		if isPathNestedUnder(givenBasePath, basePath) {
-			match = true
-			break
-		}
-	}
-	if !match {
-		return fmt.Errorf("path must be nested under %s", strings.Join(validBasePaths, " or "))
-	}
-	return nil
-}
-
 func repoPathForPath(me *iam.User, remotePath string) string {
 	base := path.Clean(fmt.Sprintf("/Repos/%s", me.UserName))
 	remotePath = path.Clean(remotePath)
@@ -66,11 +30,6 @@ func EnsureRemotePathIsUsable(ctx context.Context, wsc *databricks.WorkspaceClie
 		return err
 	}
 
-	err = checkPathNestedUnderBasePaths(me, remotePath)
-	if err != nil {
-		return err
-	}
-
 	// Ensure that the remote path exists.
 	// If it is a repo, it has to exist.
 	// If it is a workspace path, it may not exist.

libs/sync/path_test.go

@@ -7,37 +7,6 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestPathNestedUnderBasePaths(t *testing.T) {
-	me := iam.User{
-		UserName: "jane@doe.com",
-	}
-
-	// Not nested under allowed base paths.
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Repos/jane@doe.com"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Repos/jane@doe.com/."))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Repos/jane@doe.com/.."))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Repos/john@doe.com"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Repos/jane@doe.comsuffix/foo"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Repos/"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Repos"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Users/jane@doe.com"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Users/jane@doe.com/."))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Users/jane@doe.com/.."))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Users/john@doe.com"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Users/jane@doe.comsuffix/foo"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Users/"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/Users"))
-	assert.Error(t, checkPathNestedUnderBasePaths(&me, "/"))
-
-	// Nested under allowed base paths.
-	assert.NoError(t, checkPathNestedUnderBasePaths(&me, "/Repos/jane@doe.com/foo"))
-	assert.NoError(t, checkPathNestedUnderBasePaths(&me, "/Repos/jane@doe.com/./foo"))
-	assert.NoError(t, checkPathNestedUnderBasePaths(&me, "/Repos/jane@doe.com/foo/bar/qux"))
-	assert.NoError(t, checkPathNestedUnderBasePaths(&me, "/Users/jane@doe.com/foo"))
-	assert.NoError(t, checkPathNestedUnderBasePaths(&me, "/Users/jane@doe.com/./foo"))
-	assert.NoError(t, checkPathNestedUnderBasePaths(&me, "/Users/jane@doe.com/foo/bar/qux"))
-}
-
 func TestPathToRepoPath(t *testing.T) {
 	me := iam.User{
 		UserName: "jane@doe.com",