ci(travis): fixed build process error
ci(travis): fixed build process error

yarn 1.0 does not add itself to PATH, switching to npm global install for codecov

(cherry picked from commit 68267f49437dc539ee0ccf2395b67abb55f6e643)

Phlow2001/vuetify,Webifi/vuetify,Webifi/vuetify,Phlow2001/vuetify,Webifi/vuetify,azaars/vuetify,Phlow2001/vuetify,vuetifyjs/vuetify,azaars/vuetify,vuetifyjs/vuetify,vuetifyjs/vuetify,Phlow2001/vuetify,vuetifyjs/vuetify