feat(store/store_bench_test.go) add a benchmark for set operation of store pkg
We randomly generage N 3 level keys. We benchmark the speed of setting each key into etcd store.
add a setWithJson test
add mem stats for sets benchmark
feat(store_bench) add set bench for different value sizes
add delete bench
- Fix typo.
fix(store): TTL should range 1..n rather than 1..n+1

was experiencing intermittent functional test fails where TTL was eg 101
when 100 was expected
informal testing on a windows platform shows Go times resolving to the
nanosecond but with an accuracy of approximately 1 millisecond
I believe some of the functional test steps would run in under a
millisecond and cause the TTL to be recomputed with the same time.Now()
value resulting in a TTL that was +1 from the expected
Merge pull request #491 from jkakar/master

Trivial typo fix in API documentation
Merge pull request #480 from xiangli-cmu/store_bench

feat(store/store_bench_test.go) add a benchmark for set operation
Merge pull request #492 from rwindelz/fix-ttl

fix(store): TTL should range 1..n rather than 1..n+1