(build) Add the Ignore attribute

These tests have been ignored on the develop branch, since they are
known to be flaky and to cause problems. They are also failing on the
GitHub Actions builds for the support branch, so decision has been made
to exclude them here also.

Author: gep13

src/chocolatey.tests.integration/scenarios/InstallScenarios.cs

@@ -734,6 +734,8 @@ public void should_not_have_warning_package_result()
             }
         }
 
+        [Ignore("This test is known to be flaky in some environments, see comments on the develop branch for the same test.")]
+        [NotWorking("This test is known to be flaky in some environments, see comments on the develop branch for the same test.")]
         [WindowsOnly]
         [Platform(Exclude = "Mono")]
         public class when_force_installing_an_already_installed_package_with_a_read_and_delete_share_locked_file : ScenariosBase

src/chocolatey.tests.integration/scenarios/UninstallScenarios.cs

@@ -415,6 +415,8 @@ public void should_not_have_warning_package_result()
             }
         }
 
+        [Ignore("This test is known to be flaky in some environments, see comments on the develop branch for the same test.")]
+        [NotWorking("This test is known to be flaky in some environments, see comments on the develop branch for the same test.")]
         [WindowsOnly]
         [Platform(Exclude = "Mono")]
         public class when_uninstalling_a_package_with_a_read_and_delete_share_locked_file : ScenariosBase