Fix CI

- Run Kafka 2.4 by default
- Pin SSL version 1.2
- Delete pausenet docker net because the docker image is oudated,
  github action runner does not like it.
- Delete .travis.yml

Makefile

@@ -1,4 +1,4 @@
-KAFKA_VERSION ?= 2.4
+export KAFKA_VERSION ?= 2.4
 all: compile
 
 rebar ?= $(shell which rebar3)

scripts/docker-compose.yml

@@ -1,35 +1,17 @@
 version: '2'
 
 services:
-  pause:
-    image: "gcr.io/google_containers/pause-amd64:3.0"
-    networks:
-      - pausenet
-    ports:
-      - "2181:2181"
-      - "9092:9092"
-      - "9093:9093"
-      - "9094:9094"
-      - "9095:9095"
-      - "9192:9192"
-      - "9193:9193"
-      - "9194:9194"
-      - "9195:9195"
-    container_name: pause
   zookeeper:
-    depends_on:
-      - pause
     image: "zmstone/kafka:${KAFKA_VERSION}"
     container_name: zookeeper
     command: run zookeeper
-    network_mode: service:pause
+    network_mode: host
   kafka_1:
     depends_on:
-      - pause
       - zookeeper
     image: "zmstone/kafka:${KAFKA_VERSION}"
     container_name: 'kafka-1'
-    network_mode: service:pause
+    network_mode: host
     environment:
       BROKER_ID: 0
       PLAINTEXT_PORT: 9092
@@ -40,11 +22,10 @@ services:
       ZOOKEEPER_CONNECT: "localhost:2181"
   kafka_2:
     depends_on:
-      - pause
       - zookeeper
     image: "zmstone/kafka:${KAFKA_VERSION}"
     container_name: 'kafka-2'
-    network_mode: service:pause
+    network_mode: host
     environment:
       BROKER_ID: 1
       PLAINTEXT_PORT: 9192
@@ -53,6 +34,3 @@ services:
       SASL_PLAINTEXT_PORT: 9195
       ADVERTISED_HOSTNAME: localhost
       ZOOKEEPER_CONNECT: "localhost:2181"
-
-networks:
-  pausenet:

scripts/setup-test-env.sh

@@ -5,7 +5,7 @@ docker ps > /dev/null || {
     exit 1
 }
 
-VERSION=${KAFKA_VERSION:-1.1}
+VERSION=${KAFKA_VERSION:-2.4}
 if [ -z $VERSION ]; then VERSION=$1; fi
 
 case $VERSION in

test/kpro_test_lib.erl

@@ -257,6 +257,7 @@ default_ssl_options() ->
   , {keyfile,    Fname("client.key")}
   , {certfile,   Fname("client.crt")}
   , {verify,     verify_none}
+  , {versions,   ['tlsv1.2']}
   ].
 
 osenv(Name) ->