Upgrade Apache Parent Pom to 19

[eolivelli]

Descriptions of the changes in this PR:
Update the reference to the common Apache Parent POM, version 19

Motivation

Be up to date with ASF-wide configurations

Changes

Change the version

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In order to uphold a high standard for quality for code contributions, Apache BookKeeper runs various precommit
checks for pull requests. A pull request can only be merged when it passes precommit checks. However running all
the precommit checks can take a long time, some trivial changes don't need to run all the precommit checks. You
can check following list to skip the tests that don't need to run for your pull request. Leave them unchecked if
you are not sure, committers will help you:

• [skip bookkeeper-server bookie tests]: skip testing org.apache.bookkeeper.bookie in bookkeeper-server module.
• [skip bookkeeper-server client tests]: skip testing org.apache.bookkeeper.client in bookkeeper-server module.
• [skip bookkeeper-server replication tests]: skip testing org.apache.bookkeeper.replication in bookkeeper-server module.
• [skip bookkeeper-server tls tests]: skip testing org.apache.bookkeeper.tls in bookkeeper-server module.
• [skip bookkeeper-server remaining tests]: skip testing all other tests in bookkeeper-server module.
• [skip integration tests]: skip docker based integration tests. if you make java code changes, you shouldn't skip integration tests.
• [skip build java8]: skip build on java8. ONLY skip this when ONLY changing files under documentation under site.
• [skip build java11]: skip build on java11. ONLY skip this when ONLY changing files under documentation under site.

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Be sure to do all of the following to help us incorporate your contribution
quickly and easily:

If this PR is a BookKeeper Proposal (BP):

• Make sure the PR title is formatted like:
  <BP-#>: Description of bookkeeper proposal
e.g. BP-1: 64 bits ledger is support
• Attach the master issue link in the description of this PR.
• Attach the google doc link if the BP is written in Google Doc.

Otherwise:

• Make sure the PR title is formatted like:
  <Issue #>: Description of pull request
e.g. Issue 123: Description ...
• Make sure tests pass via mvn clean apache-rat:check install spotbugs:check.
• Replace <Issue #> in the title with the actual Issue number.

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[eolivelli]

rebuild java11

[eolivelli]

run bookkeeper-server tls tests

[eolivelli]

retest this please

[eolivelli]

retest this please

[eolivelli]

run bookkeeper-server replication tests
run integration tests
run bookkeeper-server client tests
rebuild java8

[eolivelli]

rebuild java8
run bookkeeper-server replication tests

[eolivelli]

rebuild java8

[eolivelli]

run bookkeeper-server replication tests

[eolivelli]

run bookkeeper-server replication tests

[eolivelli]

run bookkeeper-server replication tests

[eolivelli]

run bookkeeper-server replication tests