Analisis yuridis terhadap persekongkolan tender sebagai bentuk persaingan usaha tidak sehat oleh KPPU: studi kasus nomor 03/KPPU-L/2016 tentang jack-up drilling rig service for BD = Juridical analysis of alleged bid rigging as a form of unfair competition by the commission: case study number 03/KPPU-L/2016 related tenderaAuction jack-up drilling rig service for BD