Support python preview version 3.8.4rc1 (#692)

platforms/python/versionsToBuild.txt

@@ -14,6 +14,7 @@
 3.8.1, E3FF2839C048B25C084DEBE9B26995E310250568,
 3.8.2, E3FF2839C048B25C084DEBE9B26995E310250568,
 3.8.3, E3FF2839C048B25C084DEBE9B26995E310250568,
+3.8.4rc1, E3FF2839C048B25C084DEBE9B26995E310250568,
 3.9.0b1, E3FF2839C048B25C084DEBE9B26995E310250568
 
 

tests/Oryx.BuildImage.Tests/PlatformsCommandTest.cs

@@ -75,6 +75,7 @@ namespace Microsoft.Oryx.BuildImage.Tests
                     Assert.NotNull(pythonPlatform.Versions);
                     Assert.True(pythonPlatform.Versions.Any());
                     Assert.True(pythonPlatform.Versions.Contains("2.7.17"));
+                    Assert.True(pythonPlatform.Versions.Contains("3.8.4rc1"));
                     Assert.True(pythonPlatform.Versions.Contains("3.9.0b1"));
 
                     var phpPlatform = actualResults

tests/Oryx.BuildImage.Tests/Python/PythonDynamicInstallationTest.cs

@@ -80,6 +80,7 @@ namespace Microsoft.Oryx.BuildImage.Tests
 
         [Theory]
         [InlineData("3.8.0b3")]
+        [InlineData("3.8.4rc1")]
         [InlineData("3.9.0b1")]
         public void GeneratesScript_AndBuildsPythonPreviewVersion(string previewVersion)
         {