[tests] fix to instances test in setVolumeSize() and getFlavor()
[tests] fix to instances test in setVolumeSize() and getFlavor()

Hopebaytech/pkgcloud,andrewsomething/pkgcloud,pkgcloud/pkgcloud,Phanatic/pkgcloud,hacor/pkgcloud,dionjwa/pkgcloud,temka1234/pkgcloud,bunglestink/pkgcloud,mdsummers/pkgcloud,mcanthony/pkgcloud,DonSchenck/pkgcloud,Phanatic/pkgcloud,apla/pkgcloud,songanbui/pkgcloud