fix an intermittent test failure in kubeVirtUpdatePXBlocked test

kubeVirtUpdatePXBlocked test stops the VM 2 minutes after detecting the expected failed migration.
I am guessing that this 2 minutes window is sometimes too short for the operator to generate
a FailedToEvict event causing intermittent failure with "Did not find FailedToEvictVM event" error.

Increase the interval to 5 minutes.

Signed-off-by: Neelesh Thakur <neelesh.thakur@purestorage.com>

Author: pureneelesh

test/integration_test/kubevirt_hyperconv_test.go

@@ -1590,7 +1590,7 @@ func unblockPXUpdate(t *testing.T, unblockerData *unblockPXUpdateData) {
 func stopVMsOfFailedMigrations(t *testing.T, seen map[string]*failedMigration, testStartTime time.Time) {
 	// stop VMs for the failed migrations after some time
 	for _, migr := range seen {
-		if !migr.vmStopped && time.Since(migr.firstSeen) > 2*time.Minute {
+		if !migr.vmStopped && time.Since(migr.firstSeen) > 5*time.Minute {
 			stopVMForMigration(t, migr.migration)
 			migr.vmStopped = true
 		}