Bump pulsar-client from 2.3.2 to 2.4.0 in /modules/pulsar

[dependabot-preview]

Bumps pulsar-client from 2.3.2 to 2.4.0.

Release notes

Sourced from pulsar-client's releases.

v2.4.0

Apache

2.4.0 — 2019-06-30

PIPs

• PIP-26: Added support for delayed message delivery
  #4062, note that messages are only delayed on shared subscriptions.
• PIP-28: Pulsar Proxy Gateway Improvement #3915
• PIP-29: One package for both pulsar client and pulsar admin #3662
• PIP-30: Change authentication provider API to support mutual authentication for Kerberos Authentication #3677
  #3821 #3997
• PIP-32: Go Function API, Instance and LocalRun #3854 #4008 #4174
• PIP-33: Replicated subscriptions to keep subscription state in-sync across multiple geographical regions #4299 #4340 #4354 #4396
• PIP-34: Key_Shared subscription, Architecture for Key_Shared #4079 #4120 #4335 #4372 #4407 #4406 4462
• PIP-36: Support set message size in broker.conf #4247

Fixes

• Fix possible message loss using peer-cluster feature #3426
• Fix pulsar standalone does not read zk port from conf/standalone.conf #3790
• Fix some issues of ZkIsolatedBookieEnsemblePlacementPolicy #3917 #3918
• Fix NPE when unload non-existent topic #3946
• Fix race condition while deleting global topic #4173
• Fix deadlock on skip messages #4411
• Fix NPE when closing batch during a reconnection #4427
• Fix race condition of read-timeout task in managed ledger #4437
• Disable sticky read by default #4526
• Fix race condition between timeout-task and add-call complete #4455

Enhancements

• Optimize message replay for large backlog consumer #3732
• Added support for websocket produce/consume command #3835
• Added support for TTL config in broker.conf #3898
• Reduce memory used in ClientCnx for pending lookups #4104
• Reduce number of hashmap sections for ledger handles cache #4102
• Added backlog and offloaded size in Prometheus stats #4150
• Added support for configure the managed ledger cache eviction frequency #4066
• Added support to avoid payload copy when inserting into managed ledger cache #4197
• Added support to cache unack-messageId into OpenRangeSet #3819
• Added support configure static PulsarByteBufAllocator to handle OOM errors #4196
• Auto refresh new tls certs for jetty webserver #3645
• Create non-persistent topic by pulsar-admin/rest api #3625
• Consumer priority-level in Failover subscription #2954

Security

• Added support for other algorithms in token auth #4528

... (truncated)

Commits

• eb7ef89 Exclude go module configs check in apache-rat. (#4603)
• e6b8c77 Add missed pulsar-client-go and pulsar-function-go to src package. (#4596)
• 44feddf make pulsar_consumer_configuration_set_schema_info public
• c8b2573 [managed-ledger] close bk-client factory gracefully (#4580)
• d332815 Fix apache-rat check.
• 201e36c Release 2.4.0
• 6c13f18 [schema] Introduce schema data validator (#4360)
• e814a7f fix updating function/source/sink runtimeFlags and specifying mutiple flags (...
• 201a61e [docs] Add technical writing style for Pulsar docs to the site2/readme.md fil...
• 4dfcf11 add missing debezium-postgres connector in distribution (#4567)
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