Fix warnings that may be killing builds

[johnoliver]

Checklist

• mvn clean package build and test completes
• documentation is changed or added

[karianna]

@johnoliver - one warning:

Downloaded from central: https://repo.maven.apache.org/maven2/org/kie/kogito/kogito-bom-parent/0.5.0/kogito-bom-parent-0.5.0.pom (31 kB at 1.0 MB/s)
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for net.adoptopenjdk.api:adoptopenjdk-api-v3-models:jar:3.0.0-SNAPSHOT
[WARNING] 'dependencyManagement.dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: org.litote.kmongo:kmongo-flapdoodle:jar -> version 3.10.2 vs (?) @ net.adoptopenjdk.api:adoptopenjdk-api-v3:3.0.0-SNAPSHOT, /home/runner/work/openjdk-api-v3/openjdk-api-v3/pom.xml, line 110, column 25
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for net.adoptopenjdk.api:adoptopenjdk-api-v3:pom:3.0.0-SNAPSHOT
[WARNING] 'dependencyManagement.dependencies.dependency.(groupId:artifactId:type:classifier)' must be unique: org.litote.kmongo:kmongo-flapdoodle:jar -> version 3.10.2 vs (?) @ line 110, column 25
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING] 

also:

[WARNING] /home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater/src/test/kotlin/net/adoptopenjdk/api/UpstreamBinaryMapperTest.kt: (53, 73) Unnecessary non-null assertion (!!) on a non-null receiver of type Package
[WARNING] /home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater/src/test/kotlin/net/adoptopenjdk/api/UpstreamBinaryMapperTest.kt: (91, 113) Unnecessary safe call on a non-null receiver of type Package

and an error

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.22.2:test (default-test) on project adoptopenjdk-api-v3-updater: There are test failures.
[ERROR] 
[ERROR] Please refer to /home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater/target/surefire-reports for the individual test results.
[ERROR] Please refer to dump files (if any exist) [date].dump, [date]-jvmRun[N].dump and [date].dumpstream.
[ERROR] The forked VM terminated without properly saying goodbye. VM crash or System.exit called?
[ERROR] Command was /bin/sh -c cd /home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater && /opt/hostedtoolcache/jdk/11.0.3/x64/bin/java -javaagent:/home/runner/.m2/repository/org/jacoco/org.jacoco.agent/0.8.3/org.jacoco.agent-0.8.3-runtime.jar=destfile=/home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater/target/jacoco.exec -jar /home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater/target/surefire/surefirebooter2920595369624597429.jar /home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater/target/surefire 2020-01-20T14-30-55_822-jvmRun1 surefire12139944758301842924tmp surefire_14926248596688002125tmp
[ERROR] Error occurred in starting fork, check output in log
[ERROR] Process Exit Code: 1
[ERROR] org.apache.maven.surefire.booter.SurefireBooterForkException: The forked VM terminated without properly saying goodbye. VM crash or System.exit called?
[ERROR] Command was /bin/sh -c cd /home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater && /opt/hostedtoolcache/jdk/11.0.3/x64/bin/java -javaagent:/home/runner/.m2/repository/org/jacoco/org.jacoco.agent/0.8.3/org.jacoco.agent-0.8.3-runtime.jar=destfile=/home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater/target/jacoco.exec -jar /home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater/target/surefire/surefirebooter2920595369624597429.jar /home/runner/work/openjdk-api-v3/openjdk-api-v3/adoptopenjdk-api-v3-updater/target/surefire 2020-01-20T14-30-55_822-jvmRun1 surefire12139944758301842924tmp surefire_14926248596688002125tmp
[ERROR] Error occurred in starting fork, check output in log
[ERROR] Process Exit Code: 1
[ERROR] 	at org.apache.maven.plugin.surefire.booterclient.ForkStarter.fork(ForkStarter.java:669)
[ERROR] 	at org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:282)
[ERROR] 	at org.apache.maven.plugin.surefire.booterclient.ForkStarter.run(ForkStarter.java:245)
[ERROR] 	at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeProvider(AbstractSurefireMojo.java:1183)
[ERROR] 	at org.apache.maven.plugin.surefire.AbstractSurefireMojo.executeAfterPreconditionsChecked(AbstractSurefireMojo.java:1011)
[ERROR] 	at org.apache.maven.plugin.surefire.AbstractSurefireMojo.execute(AbstractSurefireMojo.java:857)
[ERROR] 	at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:137)
[ERROR] 	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:210)
[ERROR] 	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:156)
[ERROR] 	at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:148)
[ERROR] 	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
[ERROR] 	at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
[ERROR] 	at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:56)
[ERROR] 	at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
[ERROR] 	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:305)
[ERROR] 	at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:192)
[ERROR] 	at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:105)
[ERROR] 	at org.apache.maven.cli.MavenCli.execute(MavenCli.java:956)
[ERROR] 	at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
[ERROR] 	at org.apache.maven.cli.MavenCli.main(MavenCli.java:192)
[ERROR] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[ERROR] 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR] 	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
[ERROR] 	at org.apache.maven.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:39)
[ERROR] 	at org.apache.maven.wrapper.WrapperExecutor.execute(WrapperExecutor.java:122)
[ERROR] 	at org.apache.maven.wrapper.MavenWrapperMain.main(MavenWrapperMain.java:61)
[ERROR] 
[ERROR] -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
[ERROR] 
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :adoptopenjdk-api-v3-updater
##[error]Process completed with exit code 1.