[split] =Merge branch 'master' into sq_reserved/498209_util-6.22.2_1029222833

RB_ID=498209
TBR=true
NO-QUEUE=true
[split] =bump ostrich_2.10 to 9.6.4-SNAPSHOT

RB_ID=499001
TBR=true
NO-QUEUE=true
[split] Cut over from maven publishing to pants publishing.

RB_ID=502437
[split] Remove more poms

Not sure how these slipped by last time, removing more poms. Will skip adding the rest of the company out of shame and since they already shipited it.

RB_ID=505101
TBR=true
NO-QUEUE=true
[split] ostrich: fix typos in HistogramSpec

Fix the typos in `com.twitter.ostrich.stats.HistogramSpec`.

RB_ID=508599
Merge branch 'tmp' into develop