NIFI-6360 Updated Mockito to 2.28.2, PowerMock to 2.0.2

[jtstorck]

Fixed test failures in nifi-couchbase-processors, BinaryDocument matcher replaced with ByteArrayDocument
Fixed test failures in nifi-riemann-processors, anyInt() matcher replaced with anyLong() matcher, calling method passes a long, not int
Removed unnecessary method mocks from nifi-toolkit-tls tests, TlsCertificateAuthorityServiceHandlerTest and TlsCertificateSigningRequestPerformerTest, since those were flagged by Mockito as unnecessary (they're unused)
Removed explicit mockito dependency version in nifi-gcp-processors pom to inherit version from nifi's pom.xml
Updated ArgumentMatchers in Kafka 0.10, 0.11, 1.0, and 2.0 processor tests, since in Mockito 2.x, the "any" matchers no longer allow nulls
Updated ArgumentMatchers in nifi-jolt-transform-json-ui, since in Mockito 2.x, the "any" matchers no longer allow nulls
Removed unnecessary method mocks from MetricsReportingTaskTest
Updated TestStandardRemoteGroupPort to return Long instead of Integer for test flowfile.size() invocations
Updated AbstractCassandraProcessor to include keyspaceProperty.getValue() in null check
Updated SimpleProcessLogger and TestSimpleProcessLogger, vararg matching does not work the same in Java 8 and 11
Updated TestStandardProcessScheduler to allow null values during mock invocations, Mockito 2.x no longer allows nulls in those matchers
Updated TestPutHiveStreaming to allow null values during mock invocations, Mockito 2.x no longer allows nulls in those matchers
Updated FetchParquetTest to allow null values during mock invocations, Mockito 2.x no longer allows nulls in those matchers
Updated ControllerSearchServiceTest to allow null values during mock invocations, Mockito 2.x no longer allows nulls in those matchers
Removed usage of Whitebox from GetAzureEventHubTest due to Mockito 2.x, replaced with FieldUtils
Removed usage of Whitebox from StandardOidcIdentityProviderTest due to Mockito 2.x, replaced with FieldUtils
Updated apache-rat-plugin configuration in root POM to make use of useIdeaDefaultExcludes which makes the rat plugin exclude IntelliJ artifacts
Updated several modules to use mockito-core instead of mockito-all (discontinued in Mockito 2.x)
Updated nifi-site-to-site-reporting-task tests to be compatible with Mockito 2.x
Ignored TestPutJMS tests; the tests need to be refactored to work with Mockito 2.x, but the processor is deprecated. Refactor may be done in a separate PR.
Adjusted several mock interaction iterations to 0 for TestPublishKafkaRecord_* tests. Mockito 2.x flagged several interactions as unused and were adjusted to 0 interactions.
Updated PowerMock and Mockito dependencies to exclude transitive dependency on bytebuddy, added explicit dependency on bytebuddy 1.9.10 so that PowerMock and Mockito use the same version. Bytebuddy 1.9.3 (used by PowerMock 2.0.2) did not allow for the mocking of final/private classes, bytebuddy 1.9.10 (used by Mockito 2.28.2) does.
Updated TestSiteToSiteProvenanceReportingTask use of InvocationOnMock.getArgument to use objects for the resulting object rather than primitives
Removed unnecessary stubs from evtx tests, Mockito 2.x defaults to strict mocks
Fixed classloader issue with tests in nifi-windows-event-log-processors module that use JNAJUnitRunner when Mockito mocked JNA classes (Kernel32)
Addressed Mockito-related deprecation warnings
Import cleanup

Thank you for submitting a contribution to Apache NiFi.

Please provide a short description of the PR here:

Description of PR

Enables X functionality; fixes bug NIFI-YYYY.

In order to streamline the review of the contribution we ask you
to ensure the following steps have been taken:

For all changes:

• Is there a JIRA ticket associated with this PR? Is it referenced
  in the commit message?

• Does your PR title start with NIFI-XXXX where XXXX is the JIRA number you are trying to resolve? Pay particular attention to the hyphen "-" character.

• Has your PR been rebased against the latest commit within the target branch (typically master)?

• Is your initial contribution a single, squashed commit? Additional commits in response to PR reviewer feedback should be made on this branch and pushed to allow change tracking. Do not squash or use --force when pushing to allow for clean monitoring of changes.

For code changes:

• Have you ensured that the full suite of tests is executed via mvn -Pcontrib-check clean install at the root nifi folder?
• Have you written or updated unit tests to verify your changes?
• If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• If applicable, have you updated the LICENSE file, including the main LICENSE file under nifi-assembly?
• If applicable, have you updated the NOTICE file, including the main NOTICE file found under nifi-assembly?
• If adding new Properties, have you added .displayName in addition to .name (programmatic access) for each of the new properties?

For documentation related changes:

• Have you ensured that format looks appropriate for the output in which it is rendered?

Note:

Please ensure that once the PR is submitted, you check travis-ci for build issues and submit an update to your PR as soon as possible.

[MikeThomsen]

+1 LGTM. All of the changes looked like refactoring work to use the new APIs.