Adjusted tests CI to run with java 11

Author: holgerbrandl

.travis.yml

@@ -25,7 +25,7 @@ install:
 
   - sudo add-apt-repository -y ppa:openjdk-r/ppa
   - sudo apt-get update
-  - sudo apt-get install openjdk-8-jdk
+  - sudo apt-get install openjdk-11-jdk
   # workaround for missing cacerts in openjdk
   - sudo dpkg --purge --force-depends ca-certificates-java
   - sudo apt-get install ca-certificates-java

test/test_suite.sh

@@ -215,7 +215,7 @@ assert "${KSCRIPT_HOME}/test/resources/script_in_pckg.kts" "I live in a package!
 
 
 ## can we resolve relative imports when using tmp-scripts  (see #95)
-assert "rm -f ./package_example && kscript --package test/resources/package_example.kts &>/dev/null && ./package_example 1" "package_me_args_1_mem_4772593664"
+assert "rm -f ./package_example && kscript --package test/resources/package_example.kts &>/dev/null && ./package_example 1" "package_me_args_1_mem_5368709120"
 
 ## https://unix.stackexchange.com/questions/17064/how-to-print-only-last-column
 assert 'rm -f kscriptlet* && cmd=$(kscript --package "println(args.size)" 2>&1 | tail -n1 | cut -f 5 -d " ")  && $cmd three arg uments' "3"