Require explicit decorator on one arg constructors

We essentially follow this rule already, not relying on implicit
operators, although there are a number of cases where in theory we
could've implicitly constructed an object.

This commit enables the clang-tidy check.

Tested: Code compiles, passes clang-tidy.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Ia428463313b075c69614fdb326e8c5c094e7adde
diff --git a/redfish-core/lib/managers.hpp b/redfish-core/lib/managers.hpp
index f15fb0b..bda5a1a 100644
--- a/redfish-core/lib/managers.hpp
+++ b/redfish-core/lib/managers.hpp
@@ -1168,7 +1168,8 @@
 struct GetPIDValues : std::enable_shared_from_this<GetPIDValues>
 {
 
-    GetPIDValues(const std::shared_ptr<bmcweb::AsyncResp>& asyncRespIn) :
+    explicit GetPIDValues(
+        const std::shared_ptr<bmcweb::AsyncResp>& asyncRespIn) :
         asyncResp(asyncRespIn)
 
     {}