add polling for valid sid after job creation (reported in devinfo email alias).
add polling for valid sid after job creation (reported in devinfo email alias).

The logic here is that IF the post to the job creation endpoint is accepted (an http response of 201), a job MUST eventually be created. So we will poll every half a second until the SID becomes valid.

splunk/splunk-sdk-java,splunk/splunk-sdk-java,splunk/splunk-sdk-java,splunk/splunk-sdk-java,dkelmer/splunk-sdk-java,dkelmer/splunk-sdk-java,dkelmer/splunk-sdk-java,dkelmer/splunk-sdk-java,splunk/splunk-sdk-java,splunk/splunk-sdk-java,dkelmer/splunk-sdk-java