bump jdk to 21 (#62)

Author: jsvd

dockerjdk17.env renamed to dockerjdk21.env

@@ -1,7 +1,7 @@
 #LS_JAVA_OPTS="-Xms256m -Xmx256m -XX:MaxMetaspaceSize=256m"
 # Common LS options (can be overridden from ENV e.g. in .travis.yml) :
 # - `-Xregexp.interruptible=true -Xcompile.invokedynamic=true -Xjit.threshold=0` LS base-line
-# - set add-exports and add-opens to those required to run logstash under jdk17
+# - set add-exports and add-opens to those required to run logstash under jdk21
 # - use default garbage collection G1GC 
 # - `-v -W1` print JRuby version but do not go verbose
 JRUBY_OPTS=-J--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED -J--add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED -J--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED -J--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED -J--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED -J--add-opens=java.base/java.security=ALL-UNNAMED -J--add-opens=java.base/java.io=ALL-UNNAMED -J--add-opens=java.base/java.nio.channels=ALL-UNNAMED -J--add-opens=java.base/sun.nio.ch=ALL-UNNAMED -J--add-opens=java.management/sun.management=ALL-UNNAMED -Xregexp.interruptible=true -Xcompile.invokedynamic=true -Xjit.threshold=0 -J-XX:+PrintCommandLineFlags -v -W1

travis/matrix.yml

@@ -15,9 +15,9 @@ stages:
 
 env:
   jobs:
-    - ELASTIC_STACK_VERSION=8.x DOCKER_ENV=dockerjdk17.env
+    - ELASTIC_STACK_VERSION=8.x DOCKER_ENV=dockerjdk21.env
     - ELASTIC_STACK_VERSION=7.x
-    - SNAPSHOT=true ELASTIC_STACK_VERSION=8.x DOCKER_ENV=dockerjdk17.env
+    - SNAPSHOT=true ELASTIC_STACK_VERSION=8.x DOCKER_ENV=dockerjdk21.env
     - SNAPSHOT=true ELASTIC_STACK_VERSION=7.x
 
 jobs:
@@ -26,6 +26,6 @@ jobs:
   <<: *_performance
   env: ELASTIC_STACK_VERSION=7.x
 - <<: *_performance
-  env: ELASTIC_STACK_VERSION=8.x DOCKER_ENV=dockerjdk17.env
+  env: ELASTIC_STACK_VERSION=8.x DOCKER_ENV=dockerjdk21.env
 - <<: *_performance
-  env: SNAPSHOT=true ELASTIC_STACK_VERSION=8.x DOCKER_ENV=dockerjdk17.env
+  env: SNAPSHOT=true ELASTIC_STACK_VERSION=8.x DOCKER_ENV=dockerjdk21.env