e2e-tests: Update Dockerfile gatling_git_version to 1.0.10

Which is the currently latest tag available from the gatling-git
extension.

Change-Id: I132398c18dd4cec3052c4e88ec11f170a192f0ca
diff --git a/e2e-tests/Dockerfile b/e2e-tests/Dockerfile
index ceae672..17c001b 100644
--- a/e2e-tests/Dockerfile
+++ b/e2e-tests/Dockerfile
@@ -1,6 +1,6 @@
 FROM denvazh/gatling:3.2.1
 
-ARG gatling_git_version=1.0.9
+ARG gatling_git_version=1.0.10
 RUN apk add --no-cache maven
 RUN mvn dependency:get \
         -DgroupId=com.gerritforge \