Merge branch '1.3.x'

spring-boot-integration-tests/spring-boot-launch-script-tests/src/test/resources/conf/CentOS/5.11-7f8a8084/Dockerfile

@@ -1,4 +1,5 @@
-FROM centos:6.7
+# CentOS 5.11 from 22/03/2016
+FROM centos@sha256:7f8a808416f712da6931ac65e4308fede7fe86bcf15364b6f63af88840fe6131
 RUN yum install -y wget && \
     yum install -y system-config-services && \
     yum install -y curl && \

spring-boot-integration-tests/spring-boot-launch-script-tests/src/test/resources/conf/CentOS/6.7-4f6d8f79/Dockerfile

@@ -1,4 +1,5 @@
-FROM centos:5.11
+# CentOS 6.7 from 22/03/2016
+FROM centos@sha256:4f6d8f794af3574eca603b965fc0b63fdf852be29c17d3ab4cad7ec2272b82bd
 RUN yum install -y wget && \
     yum install -y system-config-services && \
     yum install -y curl && \

spring-boot-integration-tests/spring-boot-launch-script-tests/src/test/resources/conf/Ubuntu/trusty-20160317/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:14.04.3
+FROM ubuntu:trusty-20160317
 RUN apt-get install -y software-properties-common && \
     add-apt-repository ppa:webupd8team/java -y && \
     apt-get update && \