Renable encryption for linux container environment

Author: mathewc

src/WebJobs.Script.WebHost/Security/KeyManagement/DefaultKeyValueConverterFactory.cs

@@ -23,13 +23,8 @@ public DefaultKeyValueConverterFactory(bool allowEncryption)
 
         private static bool IsEncryptionSupported()
         {
-            if (SystemEnvironment.Instance.IsLinuxContainerEnvironment())
-            {
-                // TEMP: https://github.com/Azure/azure-functions-host/issues/3035
-                return false;
-            }
-
             return SystemEnvironment.Instance.IsAppServiceEnvironment() ||
+                SystemEnvironment.Instance.IsLinuxContainerEnvironment() ||
                 SystemEnvironment.Instance.GetEnvironmentVariable(AzureWebsiteLocalEncryptionKey) != null;
         }
 

src/WebJobs.Script.WebHost/WebJobs.Script.WebHost.csproj

@@ -57,7 +57,7 @@
     <PackageReference Include="Microsoft.Azure.WebJobs.Host.Storage" Version="3.0.11" />
     <PackageReference Include="Microsoft.Azure.WebJobs.Logging" Version="3.0.11" />
 	  <PackageReference Include="Microsoft.Azure.KeyVault" Version="3.0.3" />
-    <PackageReference Include="Microsoft.Azure.WebSites.DataProtection" Version="2.1.88-alpha" />
+    <PackageReference Include="Microsoft.Azure.WebSites.DataProtection" Version="2.1.91-alpha" />
     <PackageReference Include="System.Net.Primitives" Version="4.3.0" />
     <PackageReference Include="WindowsAzure.Storage" Version="9.3.1" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.0-beta004">