No need to add two "containers" section for one pod

Fix issue #2664
bump(gopkg.in/v2/yaml): d466437aa4adc35830964cffc5b5f262c63ddcb4
Remove uint64 bitshift workaround
Merge pull request #2756 from liggitt/yaml_bump

Bump yaml, test full int64 serialization
Merge pull request #2677 from jay-lau/master

No need to add two "containers" section for one pod
Merge pull request #2757 from MikeJeffrey/master

Using kubectl in getting started guides