[JIRA] (OVIRT-1142) Use webhooks mechanism instead of polling

Use webhooks mechanism instead of polling ----------------------------------------- Key: OVIRT-1142 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-1142 Project: oVirt - virtualization made easy Issue Type: Bug Reporter: Pavel Zhukov Assignee: Pavel Zhukov Priority: High Currently github projects uses polling to obtain new PRs to be built. It's a problem because polling is not resources effective and uses one single github user to poll. As the result we cannot use same jenkins instance for lago and oVirt organization on github. [~eedri(a)redaht.com] please reassign if needed.