Add two ReadoutCard specific tags (#208)

Author: awegrzyn

include/Monitoring/Tags.h

@@ -42,11 +42,13 @@ enum class Key : unsigned short int {
   Run,
   ID,
   Type,
-  CRORC
+  CRORC,
+  SerialId,
+  Endpoint
 };
 
 /// Tag keys array
-static constexpr std::array<std::string_view, 13> TAG_KEY = {
+static constexpr std::array<std::string_view, 15> TAG_KEY = {
   "hostname"sv,
   "rolenane"sv,
   "name"sv,
@@ -59,7 +61,9 @@ static constexpr std::array<std::string_view, 13> TAG_KEY = {
   "run"sv,
   "id"sv,
   "type"sv,
-  "CRORC"sv
+  "CRORC"sv,
+  "serialId"sv,
+  "endpoint"sv
 };
 
 // Tag values