Add github action

[coudot]

See #237

[rouazana]

Great, it works!

Could you also add the build with Java 11 as we previously had with Travis?

[coudot]

I added another steps with JDK 11 but test with JDK 8 are failing with:

Warning:       [echo] Starting OpenDJ embedded server from /home/runner/work/lsc/lsc/target/test-classes
[INFO]      [java] Unrecognized option: --add-exports=java.base/sun.security.tools.keytool=ALL-UNNAMED
[INFO]      [java] Error: Could not create the Java Virtual Machine.
[INFO]      [java] Error: A fatal exception has occurred. Program will exit.
Error:       [java] Java Result: 1
Error: The operation was canceled.

Not sure it is linked to my modification. What do you think?

[coudot]

Same error after reverting the latest commit, should be linked to 2d47fa3

Trying to run JDK 11 test before JDK 8 test to confirm this.

[coudot]

Seems we could use if/else in ant: https://ant.apache.org/manual/ifunless.html

@rouazana is this something you can look at?

[rouazana]

Strange, I tested the build with Java 8 without any issue.

I will have a look.

[rouazana]

It should be fixed, I will rebase your PR to check.