[OC][BUILD] adding support for RHEL8.3 and future versions

Signed-off-by: Raphael Defosseux <raphael.defosseux@openairinterface.org>

build/scripts/build_helper

@@ -129,6 +129,9 @@ check_supported_distribution() {
         "ubuntu18.04") return 0 ;;
         "rhel8")       return 0 ;;
         "rhel8.2")     return 0 ;;
+        "rhel8.3")     return 0 ;;
+        "rhel8.4")     return 0 ;;
+        "rhel8.5")     return 0 ;;
         "centos8")     return 0 ;;
     esac
     return 1