Github user mattyb149 commented on the issue:
https://github.com/apache/nifi/pull/2308
I ran the second command above then checked the versions, got this:
```
mvn dependency:list | grep http
[INFO] org.apache.httpcomponents:httpcore:jar:4.2.5:compile
[INFO] org.apache.httpcomponents:httpclient:jar:4.2.5:compile
[INFO] commons-httpclient:commons-httpclient:jar:3.1:compile
```---
