Ensure lint configuration is applied to all modules.

demo/contacts/src/main/res/layout/activity_contact_lookup.xml

@@ -21,7 +21,8 @@
       android:layout_height="wrap_content"
       android:text="Lookup"
       app:layout_constraintEnd_toEndOf="parent"
-      app:layout_constraintTop_toTopOf="parent"/>
+      app:layout_constraintTop_toTopOf="parent"
+      tools:ignore="HardcodedText" />
 
   <androidx.recyclerview.widget.RecyclerView
       android:id="@+id/list"

demo/contacts/src/main/res/layout/activity_main.xml

@@ -4,7 +4,8 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+    tools:context=".MainActivity"
+    tools:ignore="HardcodedText" >
 
     <Button
         android:id="@+id/contact_list_button"

demo/contacts/src/main/res/layout/child_item.xml

@@ -8,7 +8,8 @@
     android:clipChildren="false"
     android:clipToPadding="false"
     app:cardCornerRadius="5dp"
-    app:cardElevation="5dp">
+    app:cardElevation="5dp"
+    tools:ignore="HardcodedText">
 
     <androidx.constraintlayout.widget.ConstraintLayout
         android:layout_width="match_parent"