Adding some missing steps to `registering runner` section.

setting_up_runner.md

@@ -115,6 +115,41 @@ Please enter the executor: ssh, docker+machine, docker-ssh+machine, kubernetes,
 ssh
 ```
 
+7) SSH server address: (Use the 192.x.x.x IP address)
+```
+Please enter the SSH server address (e.g. my.server.com):
+192.x.x.x
+```
+
+8) Server port:
+```
+Please enter the SSH server port (e.g. 22):
+22
+```
+
+9) SSH user (in this case centos, but if you build it on ubuntu image, then user would be ubuntu):
+```
+Please enter the SSH user (e.g. root):
+centos
+```
+
+10) SSH password (leave blank):
+```
+Please enter the SSH password (e.g. docker.io):
+
+```
+
+11) Path to SSH identity file:
+```
+Please enter path to SSH identity file (e.g. /home/user/.ssh/id_rsa):
+/home/centos/.ssh/id_rsa
+```
+
+You should have successfully registered at this point:
+```
+Runner registered successfully. Feel free to start it, but if it's running already the config should be automatically reloaded!
+```
+
 
 ## Add packer on the runner VM:
 1) Add packer: