Disable HttpListener tests failing on Mono in CI

[stephentoub]

#2391
cc: @akoeplinger, @safern

[safern]

Mono failure is: #2305

CoreCLR failure, doesn't have a console: https://helix.dot.net/api/2019-06-17/jobs/91f944a4-044c-482c-a61b-fe6205e4c638/workitems/System.Security.Cryptography.Algorithms.Tests/console

@MattGal I remember we've seen this before where the OSX jobs randomly don't have logs, is someone tracking this or it is not known that is happening again?

[akoeplinger]

Thank you!

[MattGal]

Mono failure is: #2305

CoreCLR failure, doesn't have a console: https://helix.dot.net/api/2019-06-17/jobs/91f944a4-044c-482c-a61b-fe6205e4c638/workitems/System.Security.Cryptography.Algorithms.Tests/console

@MattGal I remember we've seen this before where the OSX jobs randomly don't have logs, is someone tracking this or it is not known that is happening again?

Yes this is https://github.com/dotnet/core-eng/issues/8616. Basically something broke and the packages started getting picked up from the shared site-packages path on the machine (instead of the helix folder) and this cache has old (pre breaking change) Azure storage packages.

I'll fix this specific machine up real quick but do note that the exit code for this work item was 134 so that's a legit crash even though we did lose your logs.