Fix some outerloop tests

[danmoseley]

My ongoing mission to get outerloop to pass clean on my home machine.

1. QueryDosDevice was failing with access denied on a security-related entry. Skip it.
2. Protect tests that create a user behind a check for elevation.
3. Increase timeout for OpenOrCreate_DeleteOnClose_UsableAsMutex which somehow timed out.
4. Change ping test to expect TtlExpired.

@wfurt I'm not sure about (4). Shouldn't this test always produce TtlExpired, rather than TimeExceeded?

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Issue Details

---

My ongoing mission to get outerloop to pass clean on my home machine.

1. QueryDosDevice was failing with access denied on a security-related entry. Skip it.
2. Protect tests that create a user behind a check for elevation.
3. Increase timeout for OpenOrCreate_DeleteOnClose_UsableAsMutex which somehow timed out.
4. Change ping test to expect TtlExpired.

@wfurt I'm not sure about (4). Shouldn't this test always produce TtlExpired, rather than TimeExceeded?

Author:	danmoseley
Assignees:	-
Labels:	area-Meta
Milestone:	-

[danmoseley]

Thanks @filipnavara. Would you mind opening an issue for your observations above? Seems like then this assertion can be fixed as well.

[danmoseley]

It seems that we may be getting little coverage of running network tests (at least, outer loop ones) without elevation. I believe all our automated test runs run elevated. (Something of a hole. Fortunately most contributors likely aren't elevated.)

[danmoseley]

/backport to release/6.0

[github-actions]

Started backporting to release/6.0: https://github.com/dotnet/runtime/actions/runs/1665429251

[github-actions]

@danmoseley backporting to release/6.0 failed, the patch most likely resulted in conflicts:

$ git am --3way --ignore-whitespace --keep-non-patch changes.patch

Applying: serialport
Applying: Fix OpenOrCreate_DeleteOnClose_UsableAsMutex
Using index info to reconstruct a base tree...
A	src/libraries/System.IO.FileSystem/tests/FileStream/DeleteOnClose.cs
Falling back to patching base and 3-way merge...
CONFLICT (modify/delete): src/libraries/System.IO.FileSystem/tests/FileStream/DeleteOnClose.cs deleted in HEAD and modified in Fix OpenOrCreate_DeleteOnClose_UsableAsMutex. Version Fix OpenOrCreate_DeleteOnClose_UsableAsMutex of src/libraries/System.IO.FileSystem/tests/FileStream/DeleteOnClose.cs left in tree.
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0002 Fix OpenOrCreate_DeleteOnClose_UsableAsMutex
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
Error: The process '/usr/bin/git' failed with exit code 128

Please backport manually!