"[overlay] Add back INSetProfileInCarIntent.defaultProfile for compatibliity

<rdar://problem/33457609>

(cherry picked from commit 936a79cbf2eee87f03000ad570b1db6db1e10d10)

Author: Max Moiseev

stdlib/public/SDK/Intents/INSetProfileInCarIntent.swift

@@ -123,11 +123,17 @@ extension INSetProfileInCarIntent {
         }
     }
 
-    @available(iOS 11.0, *)
-    public final var isDefaultProfile: Bool? {
+    @available(iOS 10.0, *)
+    public var isDefaultProfile: Bool? {
         return __defaultProfile?.boolValue
     }
 
+    @available(swift, deprecated: 3.2, obsoleted: 4.0,
+      message: "Please use isDefaultProfile instead")
+    public var defaultProfile: Int? {
+      return __defaultProfile?.intValue
+    }
+
     @available(iOS 10.0, *)
     public final var profileNumber: Int? {
         return __profileNumber?.intValue

test/stdlib/Intents.swift

@@ -41,6 +41,17 @@ if #available(iOS 11.0, *) {
       expectUnreachable()
     }
   }
+
+  IntentsTestSuite.test("INSetProfileInCarIntent/defaultProfile availability/\(swiftVersion)") {
+    func f(profile: INSetProfileInCarIntent) {
+      var isDefaultProfile = profile.isDefaultProfile
+      expectType(Bool?.self, &isDefaultProfile)
+#if !swift(>=4)
+      var defaultProfile = profile.defaultProfile
+      expectType(Int?.self, &defaultProfile)
+#endif
+    }
+  }
 }
 #endif