When running swarm-client version 3.4 and trying to connect to a Jenkins master using HTTPS the client will crash with NullPointerException if not using either of options -disableSslVerification or -sslFingerprints

> java -jar swarm-client-3.4.jar
Apr 19, 2017 10:48:29 AM hudson.plugins.swarm.Client main
INFO: Client.main invoked with: []
Apr 19, 2017 10:48:29 AM hudson.plugins.swarm.Client run
INFO: Discovering Jenkins master
Apr 19, 2017 10:48:29 AM hudson.plugins.swarm.Client run
INFO: No Jenkins master supplied on command line, performing auto-discovery
Apr 19, 2017 10:48:35 AM hudson.plugins.swarm.Client run

INFO: Attempting to connect to https://URL 7a...6b with ID 7d...ca
Exception in thread "main" java.lang.NullPointerException
{{ at hudson.plugins.swarm.SwarmClient.createHttpClient(SwarmClient.java:333)}}
at hudson.plugins.swarm.SwarmClient.createSwarmSlave(SwarmClient.java:398)
{{ at hudson.plugins.swarm.Client.run(Client.java:134)}}
{{ at hudson.plugins.swarm.Client.main(Client.java:87)}}