Minor 
When using spring-boot-dependencies 2.5.4 as my parent pom, and adding spring-boot-starter-web with tomcat excluded, and spring-boot-starter-undertow as a dependency, I get the following errors when running mvn install:
[INFO] --- maven-enforcer-plugin:3.0.0:enforce (enforce-dependency-convergence) @ project --- [WARNING] The POM for org.apache.logging.log4j:log4j-api-java9:zip:2.14.1 is missing, no dependency information available [WARNING] Dependency convergence error for org.jboss.logging:jboss-logging-processor:jar:2.2.1.Final:runtime paths to dependency are: +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.logging:jboss-logging-processor:jar:2.2.1.Final:runtime and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.xnio:xnio-api:jar:3.8.4.Final:compile +-org.jboss.logging:jboss-logging-processor:jar:2.2.1.Final:provided and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.xnio:xnio-api:jar:3.8.4.Final:compile +-org.wildfly.common:wildfly-common:jar:1.5.2.Final:compile +-org.jboss.logging:jboss-logging-processor:jar:2.2.0.Final:provided and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.xnio:xnio-api:jar:3.8.4.Final:compile +-org.wildfly.client:wildfly-client-config:jar:1.0.1.Final:compile +-org.jboss.logging:jboss-logging-processor:jar:2.1.0.Final:provided and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.xnio:xnio-nio:jar:3.8.4.Final:runtime +-org.jboss.logging:jboss-logging-processor:jar:2.2.1.Final:runtime and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.threads:jboss-threads:jar:3.1.0.Final:compile +-org.jboss.logging:jboss-logging-processor:jar:2.2.0.Final:provided and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-servlet:jar:2.2.10.Final:compile +-org.jboss.logging:jboss-logging-processor:jar:2.2.1.Final:provided and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-websockets-jsr:jar:2.2.10.Final:compile +-org.jboss.logging:jboss-logging-processor:jar:2.2.1.Final:provided [WARNING] Dependency convergence error for org.wildfly.common:wildfly-common:jar:1.5.2.Final:compile paths to dependency are: +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.xnio:xnio-api:jar:3.8.4.Final:compile +-org.wildfly.common:wildfly-common:jar:1.5.2.Final:compile and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.xnio:xnio-api:jar:3.8.4.Final:compile +-org.wildfly.client:wildfly-client-config:jar:1.0.1.Final:compile +-org.wildfly.common:wildfly-common:jar:1.2.0.Final:compile [WARNING] Dependency convergence error for org.jboss.logging:jboss-logging-annotations:jar:2.2.1.Final:runtime paths to dependency are: +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.logging:jboss-logging-processor:jar:2.2.1.Final:runtime +-org.jboss.logging:jboss-logging-annotations:jar:2.2.1.Final:runtime and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.xnio:xnio-api:jar:3.8.4.Final:compile +-org.wildfly.common:wildfly-common:jar:1.5.2.Final:compile +-org.jboss.logging:jboss-logging-annotations:jar:2.2.0.Final:provided and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.xnio:xnio-api:jar:3.8.4.Final:compile +-org.jboss.logging:jboss-logging-annotations:jar:2.2.1.Final:provided and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.xnio:xnio-nio:jar:3.8.4.Final:runtime +-org.jboss.logging:jboss-logging-annotations:jar:2.2.1.Final:runtime and +-testing:project:pom:1.0.0-SNAPSHOT +-org.springframework.boot:spring-boot-starter-undertow:jar:2.5.4:compile +-io.undertow:undertow-core:jar:2.2.10.Final:compile +-org.jboss.threads:jboss-threads:jar:3.1.0.Final:compile +-org.jboss.logging:jboss-logging-annotations:jar:2.2.0.Final:provided
