End 2 End tests speedup (#1180)

* Improving end 2 end tests, especially speed of execution and error, by implementing proper eventual asserts and timeouts.
* Add documentation for running individual tests
* Fixed String encoding in Patorni state check and error case
* Printing config as multi log line entity, makes it readable and grepable on startup
* Cosmetic changes to logs. Removed quotes from diff. Move all object diffs to text diff. Enabled padding for log level.
* Mount script with tools for easy logaccess and watching objects.
* Set proper update strategy for Postgres operator deployment.
* Move long running test to end. Move pooler test to new functions.
* Remove quote from valid K8s identifiers.

pkg/cluster/pod.go

@@ -304,9 +304,16 @@ func (c *Cluster) isSafeToRecreatePods(pods *v1.PodList) bool {
 	 after this check succeeds but before a pod is re-created
 	*/
 
+	for _, pod := range pods.Items {
+		c.logger.Debugf("name=%s phase=%s ip=%s", pod.Name, pod.Status.Phase, pod.Status.PodIP)
+	}
+
 	for _, pod := range pods.Items {
 		state, err := c.patroni.GetPatroniMemberState(&pod)
-		if err != nil || state == "creating replica" {
+		if err != nil {
+			c.logger.Errorf("failed to get Patroni state for pod: %s", err)
+			return false
+		} else if state == "creating replica" {
 			c.logger.Warningf("cannot re-create replica %s: it is currently being initialized", pod.Name)
 			return false
 		}