Fix NoClassDefFoundError (com.sleepycat.je.DatabaseException) in sample LDAP server

[Kcchouette]

Summary

Fixes java.lang.NoClassDefFoundError: com/sleepycat/je/DatabaseException when starting the embedded OpenDJ LDAP server using bin/lsc-sample --start-ldap-server.

Root Cause

• OpenDJ 2.6.4 relies on Berkeley DB Java Edition (org.opends.server.backends.jeb.BackendImpl) for its userRoot local storage backend.
• The opendj-server:2.6.4 Maven artifact was published without transitive runtime dependencies, omitting com.sleepycat:je.
• Consequently, the Sleepycat JE library was missing from both the runtime classpath and the distribution archive sample/lib directory.

Changes

1. pom.xml: Added explicit dependency com.sleepycat:je:5.0.73 under Sleepycat License (BSD-compatible).
2. src/main/assembly/dist.xml: Fixed OpenDJ groupId to org.forgerock.ce.opendj and routed com.sleepycat:je to sample/lib.
3. sample/*/bin/lsc-sample:
   • Added sample/lib/*.jar to the sample script classpath (LDAPCP).
   • Added required JVM --add-opens flags for Java 17/21 compatibility.
   • Fixed a bash syntax typo in sample/ldap2hsqldb/bin/lsc-sample.

Related to #560

[coudot]

Thanks, the quickstart is working now!