chore(badger): Update badger to 37ee16d

[jarifibrahim]

This description was generated using this script:

#!/bin/bash

set -e
GHORG=${GHORG:-dgraph-io}
GHREPO=${GHREPO:-badger}
cat <<EOF
This description was generated using this script:
\`\`\`sh
`cat $0`
\`\`\`
Invoked as:

    `echo GHORG=${GHORG} GHREPO=${GHREPO} $(basename $0) ${@:1}`

EOF
git log --oneline --reverse ${@:1} \
  | sed -E "s/^(\S{7}\s)//g" \
  | sed -E "s/([\s|\(| ])#([0-9]+)/\1${GHORG}\/${GHREPO}#\2/g" \

Invoked as:

GHORG=dgraph-io GHREPO=badger changes.sh 3ffaf3cd1d4a...37ee16d8ad1c

Various bug fixes: Break up list and run DropAll func (hypermodeinc/badger#1439) (hypermodeinc/badger#1440)

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This change is