fix Directory.Build imports

Author: matouskozak

src/tests/FunctionalTests/iOS/Device/Directory.Build.props

@@ -4,7 +4,8 @@
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <IsTestProject Condition="'$(IsTestProject)' == ''">true</IsTestProject>
+    <IsFunctionalTest>true</IsFunctionalTest>
   </PropertyGroup>
 
-  <Import Project="..\..\..\..\libraries\Directory.Build.props" />
+  <Import Project="..\..\Directory.Build.props" />
 </Project>

src/tests/FunctionalTests/iOS/Device/Directory.Build.targets

@@ -1,3 +1,3 @@
 <Project>
-  <Import Project="..\..\..\..\libraries\Directory.Build.targets" />
+  <Import Project="..\..\Directory.Build.targets" />
 </Project>

src/tests/FunctionalTests/tvOS/Device/AOT/Directory.Build.props

@@ -6,5 +6,5 @@
     <IsTestProject Condition="'$(IsTestProject)' == ''">true</IsTestProject>
   </PropertyGroup>
 
-  <Import Project="..\..\..\..\..\libraries\Directory.Build.props" />
+  <Import Project="..\..\..\Directory.Build.props" />
 </Project>

src/tests/FunctionalTests/tvOS/Device/AOT/Directory.Build.targets

@@ -1,3 +1,3 @@
 <Project>
-  <Import Project="..\..\..\..\..\libraries\Directory.Build.targets" />
+  <Import Project="..\..\..\Directory.Build.targets" />
 </Project>