Description of problem:
There are many cases, when infinispinner happens:

1)
Port is:"aaaaaaaa" and Host is blank and sometimes infinispinner doesn't happen:
ERROR -- : MIQ(ops_controller-validate_replcation_worker): Validation failed due to missing port

2)
Port is:"3306" and Host can be for example only space or "t" or "test". Again infinispinner sometimes doesn't happen:
Error:
ERROR -- : MIQ(ops_controller-validate_replcation_worker): Validation failed with error: 'could not translate host name "t" to address: Name or service not known

3) Port is for example "dsadsadsa" or "330" and host is correct:"IP of appliance" "10.16.5.148".
Error:
MIQ(ops_controller-validate_replcation_worker): Validation failed with error: 'invalid port number: "dsadsadsa"

4) Both Port and Host filled right
Error:
MIQ(ops_controller-validate_replcation_worker): Validation failed with error: 'could not connect to server: No route to host

This is so random behavior.
Also in all these cases often appears error:
MIQ(ops_controller-validate_replcation_worker): Validation failed with error: 'host cannot be blank
Made a BZ for it here: https://bugzilla.redhat.com/show_bug.cgi?id=1342597

How reproducible:
50%

Steps to Reproduce:
1. Settings -> Workers
2. Fill data in and click on validate
3.

Actual results:


Expected results:


Additional info: