Making builds fail if Javadoc is not generated successfully (#409)

* Making builds fail if Javadoc is not generated successfully

- Removing <failOnError>false</failOnError>  from configuration for JavaDoc in pom.xml

* Disable doclint to fix javadoc builds

- Updating Javadoc maven plugin version to 3.4.1 (match with microprofile-parent project)
- Disabling doclint to match with microprofile-parent project and fix build break

pom.xml

@@ -127,7 +127,7 @@
         <plugins>
             <plugin>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.0.1</version>
+                <version>3.4.1</version>
                 <executions>
                     <execution>
                         <id>aggregate-javadoc</id>
@@ -138,7 +138,7 @@
                     </execution>
                 </executions>
                 <configuration>
-                    <failOnError>false</failOnError> 
+                    <doclint>none</doclint>
                     <additionalDependencies>
                         <additionalDependency>
                             <groupId>org.osgi</groupId>