Merge branch...

Merge branch 'TR28.541_Rel18_correction_to_attribute_definintion_to_InterfaceUpfInfoItem_and_IpInterface' into 'Integration_Rel18_SA5_156_YAML'

TR28.541 Rel18 CR1301 correction to attribute definintion to InterfaceUpfInfoItem_and_IpInterface

See merge request !1250