[d16-2] Bump mono to 2019-02 latest head.

[mandel-macaque]

Bump mono for the preview with the latests mono commits.

• mono/mono@c6edaa6 Bump CoreFX to pickup the fix for [Foundation] Remove NSUrlSessionHandler.TrustOverride in .NET. #14214.
• mono/mono@0349bbe [2019-02] Fix build on macOS 10.15 Catalina + xcode 11
• mono/mono@240aa5b [2019-02] Bump CoreFX
• mono/mono@6159e0f Bump msbuild to track mono-2019-02
• mono/mono@a90018b [2019-02] Remapping should affect GAC search paths considered by the loader
• mono/mono@3d9513e [tests] Exclude more nunit categories on ios/mac
• mono/mono@7147d87 [msbuild] Bump to track mono-2019-02 HEAD
• mono/mono@0e21597 [2019-02] Bump roslyn to 3.1.0
• mono/mono@fa0663d [2019-02] [arm64] Correct exception filter stack frame size
• [sdks] Exclude unecessary ios libs from sdks archive mono/mono@43e0f5a
• mono/mono@8ff6a12 [MacSDK] Properly handle PATHs with spaces during package post-install

Complete diff: mono/mono@e113ce9...c6edaa6

[mandel-macaque]

Coordinated bump with android: xamarin/xamarin-android#3173

[monojenkins]

Build success
ℹ️ Skipped execution

[bholmes]

Let us make sure that we match Android here, I think that is the plan. @jonpryor

[mandel-macaque]

@bholmes yes, we are in sync as per xamarin/xamarin-android#3173 and pinged VS Mac about the last commit we used.

[mandel-macaque]

The iOS VSTS failure is known: https://github.com/xamarin/maccore/issues/1600

[xamarin-release-manager]

❌ Build was (probably) aborted

🔥 Jenkins job (on internal Jenkins) failed in stage(s) 'Running XM tests on '10.10', Running XM tests on '10.10'' 🔥

✅ Build succeeded
✅ Packages: xamarin.ios-12.14.0.91.pkg xamarin.mac-5.14.0.91.pkg
✅ API Diff (from stable)
✅ API Diff (from PR only) (no change)
✅ Generator Diff (no change)
🔥 Xamarin.Mac tests on 10.10 failed: Xamarin.Mac tests on macOS 10.10 failed (xammac_tests) 🔥
🔥 Test run failed 🔥

Test results

7 tests failed, 235 tests passed.

Failed tests

• [NUnit] Mono SystemXmlTests/watchOS 32-bits - simulator/Debug: Crashed
• [NUnit] Mono SystemServiceModelWebTests/watchOS 32-bits - simulator/Debug: Crashed
• [NUnit] Mono MonoCSharpTests/watchOS 32-bits - simulator/Debug: Crashed
• [xUnit] Mono SystemRuntimeCompilerServicesUnsafeXunit/watchOS 32-bits - simulator/Debug: Crashed
• [xUnit] Mono SystemNetHttpUnitTestsXunit/watchOS 32-bits - simulator/Debug: Crashed
• [xUnit] Mono SystemNetHttpFunctionalTestsXunit/watchOS 32-bits - simulator/Debug: Crashed
• introspection/watchOS 32-bits - simulator/Debug (watchOS 2.0): Crashed

[mandel-macaque]

WatchOS crashes are due to https://github.com/xamarin/maccore/issues/581

[mandel-macaque]

Failing test on 10.10 is known: xamarin/maccore#1645