Fix travis to also only install certain packages.
Fix travis to also only install certain packages.

levigross/gopacket,google/gopacket,skyportsystems/gopacket,google/gopacket,zerklabs/gopacket,wheelcomplex/gopacket,nhooyr/gopacket,levigross/gopacket,rouzier/gopacket,clarktrimble/gopacket,xuzhaokui/gopacket,clarktrimble/gopacket,vtolstov/gopacket,xuzhaokui/gopacket,aeppert/gopacket,adriantam/gopacket,rouzier/gopacket,hkwi/gopacket,wheelcomplex/gopacket,clarktrimble/gopacket,adriantam/gopacket,ross-williams/gopacket,zerklabs/gopacket,aeppert/gopacket,breml/gopacket,aeppert/gopacket,vtolstov/gopacket,LrsK/gopacket,josephcopenhaver/gopacket,adriantam/gopacket,levigross/gopacket,wheelcomplex/gopacket,ccordes-snaproute/gopacket,ross-williams/gopacket,UIKit0/gopacket-1,urso/gopacket,1d4Nf6/gopacket,nhooyr/gopacket,ccordes-snaproute/gopacket,breml/gopacket,hkwi/gopacket,xuzhaokui/gopacket,urso/gopacket,nhooyr/gopacket,josephcopenhaver/gopacket,hkwi/gopacket,breml/gopacket,UIKit0/gopacket-1,josephcopenhaver/gopacket,ccordes-snaproute/gopacket,1d4Nf6/gopacket,skyportsystems/gopacket,vtolstov/gopacket,zerklabs/gopacket,ross-williams/gopacket,UIKit0/gopacket-1,urso/gopacket,google/gopacket,rouzier/gopacket,LrsK/gopacket,1d4Nf6/gopacket,skyportsystems/gopacket,LrsK/gopacket