Add more comprehensive test for Grid Search to Flow tests

[exalate-issue-sync]

[~accountid:5b153fb1b0d76456f36daced] recently reported this issue:

water.api.FSIOException: FS IO Failure: 
 accessed path : file:/grid-5a8fd9bf-fc42-4185-906e-a62857234a23 caused by: /grid-5a8fd9bf-fc42-4185-906e-a62857234a23 (Permission denied)
	at water.persist.PersistFS.create(PersistFS.java:137)
	at hex.grid.Grid.exportBinary(Grid.java:507)
	at hex.grid.GridSearch.gridSearch(GridSearch.java:253)
	at hex.grid.GridSearch.access$000(GridSearch.java:71)
	at hex.grid.GridSearch$1.compute2(GridSearch.java:139)
	at water.H2O$H2OCountedCompleter.compute(H2O.java:1417)
	at jsr166y.CountedCompleter.exec(CountedCompleter.java:468)
	at jsr166y.ForkJoinTask.doExec(ForkJoinTask.java:263)
	at jsr166y.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:974)
	at jsr166y.ForkJoinPool.runWorker(ForkJoinPool.java:1477)
	at jsr166y.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:104)
Caused by: java.io.FileNotFoundException: /grid-5a8fd9bf-fc42-4185-906e-a62857234a23 (Permission denied)
	at java.io.FileOutputStream.open0(Native Method)

while running Grid Search from Flow

This was not caught by our testing framework => we need to extend the test suite to cover this particular case as well.

[exalate-issue-sync]

Zuzana Olajcová commented: Resolved in [#4070|https://github.com//pull/4070].

[h2o-ops]

JIRA Issue Migration Info

Jira Issue: PUBDEV-7058
Assignee: Zuzana Olajcová
Reporter: Michal Kurka
State: Resolved
Fix Version: 3.28.0.1
Attachments: N/A
Development PRs: Available

Linked PRs from JIRA

#4070