Suppress "Do not directly await a Task" warning

Author: jcansdale

src/GitHub.App/GlobalSuppressions.cs

@@ -6,6 +6,8 @@
 [assembly: SuppressMessage("Microsoft.Naming", "CA1703:ResourceStringsShouldBeSpelledCorrectly", MessageId = "Git", Scope = "resource", Target = "GitHub.App.Resources.resources")]
 [assembly: SuppressMessage("Microsoft.Globalization", "CA1305:SpecifyIFormatProvider", MessageId = "System.String.Format(System.String,System.Object,System.Object,System.Object)", Scope = "member", Target = "GitHub.Services.PullRequestService.#CreateTempFile(System.String,System.String,System.String)")]
 [assembly: SuppressMessage("Microsoft.Globalization", "CA1305:SpecifyIFormatProvider", MessageId = "System.String.Format(System.String,System.Object,System.Object,System.Object)", Scope = "member", Target = "GitHub.Services.PullRequestService.#CreateTempFile(System.String,System.String,System.String,System.Text.Encoding)")]
+[assembly: SuppressMessage("Reliability", "CA2007:Do not directly await a Task", Justification = "We always need to think about what thread we're running on")]
+
 // This file is used by Code Analysis to maintain SuppressMessage 
 // attributes that are applied to this project.
 // Project-level suppressions either have no target or are given