travis: Add gimme.local
travis: Add gimme.local

Add a local gimme script that knows how to provide a go compiler with
arm64 cgo support.

This change can be reverted once travis PR #45 is merged.

Signed-off-by: Geoff Levand <c3918f39022407dee6a0056ceca9b1aa80e8e4ce@infradead.org>

rkt/rkt,akshaykarle/rkt,kinvolk/rkt,dgonyeo/rkt,jonboulle/rkt,Wilybald/rkt,intelsdi-x/rkt,intelsdi-x/rkt,Wilybald/rkt,rkt/rkt,joshix/rkt,kinvolk/rkt,lucasallan/rkt,yifan-gu/rkt,s-urbaniak/rkt,kinvolk/rkt,shobhit85/rkt,joshix/rkt,Shashwatsh/rkt,alban/rkt,achanda/rkt,monstermunchkin/rkt,Wilybald/rkt,ybubnov/rkt,s-urbaniak/rkt,ybubnov/rkt,dgonyeo/rkt,sstabellini/rkt,jjlakis/rkt,rkt/rkt,jonboulle/rkt,coreos/rkt,joshix/rkt,Wilybald/rkt,monstermunchkin/rkt,sgotti/rkt,nhlfr/rkt,jonboulle/rkt,lucasallan/rkt,intelsdi-x/rkt,yifan-gu/rocket,rkt/rkt,Shashwatsh/rkt,nhlfr/rkt,jjlakis/rkt,akshaykarle/rkt,squeed/rkt,cab105/rkt,lucasallan/rkt,achanda/rkt,s-urbaniak/rkt,shobhit85/rkt,alban/rkt,jakon89/rkt,sgotti/rkt,sgotti/rkt,sstabellini/rkt,squeed/rkt,achanda/rkt,cab105/rkt,squeed/rkt,yifan-gu/rocket,coreos/rkt,shobhit85/rkt,euank/rkt,jakon89/rkt,cab105/rkt,kinvolk/rkt,lucasallan/rkt,Shashwatsh/rkt,nhlfr/rkt,yifan-gu/rkt,jjlakis/rkt,jakon89/rkt,dgonyeo/rkt,yifan-gu/rkt,yifan-gu/rocket,sstabellini/rkt,ybubnov/rkt,coreos/rkt,joshix/rkt,alban/rkt,euank/rkt,akshaykarle/rkt,euank/rkt,monstermunchkin/rkt