Merge branch 'TS28.538_Rel-19_CR_Implement_readonly_attributes_for_openAPI_SS'...

Merge branch 'TS28.538_Rel-19_CR_Implement_readonly_attributes_for_openAPI_SS' into 'Integration_Rel19_SA5_157_YAML'

TS28.538_Rel-19_CR0089_Implement_readonly_attributes_for_openAPI_SS

See merge request !1367