Update s3 bucket creation docs for us-east-1
Update s3 bucket creation docs for us-east-1

Signed-off-by: Josh Hull <53c4a29436e52dc4b02db9ce52c752927e333e3a@lypht.com>

improve non-optional location-constraint verbiage

Signed-off-by: Josh Hull <53c4a29436e52dc4b02db9ce52c752927e333e3a@lypht.com>

changing location-constraint to LocationConstraint

Signed-off-by: Josh Hull <53c4a29436e52dc4b02db9ce52c752927e333e3a@lypht.com>

Zero assumptions are optimal

Signed-off-by: Josh Hull <53c4a29436e52dc4b02db9ce52c752927e333e3a@lypht.com>

heptio/ark,heptio/ark