Fix badger build in 386 (elastic#21613) (elastic#21619)

Use a fork with the latest released version including the fix
for the issue with 32-bit architectures.
Fix uses uint32 instead of 32-bit int to avoid overflow in
constant with max uint32.

(cherry picked from commit b58aeb6)

NOTICE.txt

@@ -4473,12 +4473,12 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 
 --------------------------------------------------------------------------------
-Dependency : github.com/dgraph-io/badger/v2
-Version: v2.2007.2
+Dependency : github.com/elastic/badger/v2
+Version: v2.2007.2-beats
 Licence type (autodetected): Apache-2.0
 --------------------------------------------------------------------------------
 
-Contents of probable licence file $GOMODCACHE/github.com/dgraph-io/badger/v2@v2.2007.2/LICENSE:
+Contents of probable licence file $GOMODCACHE/github.com/elastic/badger/v2@v2.2007.2-beats/LICENSE:
 
  Apache License
  Version 2.0, January 2004

go.mod

@@ -190,6 +190,7 @@ replace (
  github.com/Azure/go-autorest => github.com/Azure/go-autorest v12.2.0+incompatible
  github.com/Shopify/sarama => github.com/elastic/sarama v1.19.1-0.20200629123429-0e7b69039eec
  github.com/cucumber/godog => github.com/cucumber/godog v0.8.1
+ github.com/dgraph-io/badger/v2 => github.com/elastic/badger/v2 v2.2007.2-beats
  github.com/docker/docker => github.com/docker/engine v0.0.0-20191113042239-ea84732a7725
  github.com/docker/go-plugins-helpers => github.com/elastic/go-plugins-helpers v0.0.0-20200207104224-bdf17607b79f
  github.com/dop251/goja => github.com/andrewkroh/goja v0.0.0-20190128172624-dd2ac4456e20

go.sum

@@ -201,8 +201,6 @@ github.com/denisenkom/go-mssqldb v0.0.0-20200206145737-bbfc9a55622e/go.mod h1:xb
 github.com/devigned/tab v0.1.1/go.mod h1:XG9mPq0dFghrYvoBF3xdRrJzSTX1b7IQrvaL9mzjeJY=
 github.com/devigned/tab v0.1.2-0.20190607222403-0c15cf42f9a2 h1:6+hM8KeYKV0Z9EIINNqIEDyyIRAcNc2FW+/TUYNmWyw=
 github.com/devigned/tab v0.1.2-0.20190607222403-0c15cf42f9a2/go.mod h1:XG9mPq0dFghrYvoBF3xdRrJzSTX1b7IQrvaL9mzjeJY=
-github.com/dgraph-io/badger/v2 v2.2007.2 h1:EjjK0KqwaFMlPin1ajhP943VPENHJdEz1KLIegjaI3k=
-github.com/dgraph-io/badger/v2 v2.2007.2/go.mod h1:26P/7fbL4kUZVEVKLAKXkBXKOydDmM2p1e+NhhnBCAE=
 github.com/dgraph-io/ristretto v0.0.3-0.20200630154024-f66de99634de h1:t0UHb5vdojIDUqktM6+xJAfScFBsVpXZmqC9dsgJmeA=
 github.com/dgraph-io/ristretto v0.0.3-0.20200630154024-f66de99634de/go.mod h1:KPxhHT9ZxKefz+PCeOGsrHpl1qZ7i70dGTu2u+Ahh6E=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
@@ -241,6 +239,8 @@ github.com/eapache/queue v1.1.0 h1:YOEu7KNc61ntiQlcEeUIoDTJ2o8mQznoNvUhiigpIqc=
 github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
 github.com/eclipse/paho.mqtt.golang v1.2.1-0.20200121105743-0d940dd29fd2 h1:DW6WrARxK5J+o8uAKCiACi5wy9EK1UzrsCpGBPsKHAA=
 github.com/eclipse/paho.mqtt.golang v1.2.1-0.20200121105743-0d940dd29fd2/go.mod h1:H9keYFcgq3Qr5OUJm/JZI/i6U7joQ8SYLhZwfeOo6Ts=
+github.com/elastic/badger/v2 v2.2007.2-beats h1:/rV4bM6fdYvPQhFf2bHHivIb0H4nX8Or7nkWbQ/Q6Ko=
+github.com/elastic/badger/v2 v2.2007.2-beats/go.mod h1:26P/7fbL4kUZVEVKLAKXkBXKOydDmM2p1e+NhhnBCAE=
 github.com/elastic/dhcp v0.0.0-20200227161230-57ec251c7eb3 h1:lnDkqiRFKm0rxdljqrj3lotWinO9+jFmeDXIC4gvIQs=
 github.com/elastic/dhcp v0.0.0-20200227161230-57ec251c7eb3/go.mod h1:aPqzac6AYkipvp4hufTyMj5PDIphF3+At8zr7r51xjY=
 github.com/elastic/ecs v1.6.0 h1:8NmgfnsjmKXh9hVsK3H2tZtfUptepNc3msJOAynhtmc=