I have solved http-poller ssl check issue (conflict of CN name) with the below workaround
Modify the below file
/usr/share/logstash/vendor/bundle/jruby/2.5.0/gems/manticore-0.7.0-java/lib/manticore/client.rb
add
verifier = SSLConnectionSocketFactory::ALLOW_ALL_HOSTNAME_VERIFIER
as default action
for more negative comments (I am not a ruby developer )