Merge branch 'create_qer_ie_fix' into 'develop'

Fix for encode/decode of create QER IE

See merge request oai/cn5g/oai-cn5g-smf!172

src/common/3gpp_29.244.h

@@ -1417,8 +1417,8 @@ typedef struct dl_flow_level_marking_s {
   uint8_t spare : 6;
   uint8_t sci : 1;
   uint8_t ttc : 1;
-  uint16_t tos_traffic_class;
-  uint16_t service_class_indicator;
+  std::string tos_traffic_class;
+  std::string service_class_indicator;
 } dl_flow_level_marking_t;
 
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