VOL-3431: Following enhancement/changes are done in this patch
- Process ONUs in bulk rather than serial, significantly improves run time
- Used a separate API to get flow-id. This flow-id is not freed on failure,
  as this adds to unnecessary complexity and unwarranted for a test tool .
- Print the total execution time at the end of the test
- Fixed the Dockerfile to not build vendor module at each docker build time
- Introduced new functions to retry scheduler, queue and flow adds on failure,
  but these are not currently used
- Add vendor modules to repo just like all other ONF VOLTHA golang projects do
- Tested all three workflows - ATT, DT and TT
- Bump version to 1.1.0

Change-Id: I6102cb206e78ea04b49b7125b101946ca6f36bfb
diff --git a/core/dt_workflow.go b/core/dt_workflow.go
index a06b29b..5c8b345 100644
--- a/core/dt_workflow.go
+++ b/core/dt_workflow.go
@@ -22,7 +22,6 @@
 
 	"github.com/opencord/openolt-scale-tester/config"
 	"github.com/opencord/voltha-lib-go/v3/pkg/log"
-	"github.com/opencord/voltha-lib-go/v3/pkg/ponresourcemanager"
 	oop "github.com/opencord/voltha-protos/v3/go/openolt"
 	tp_pb "github.com/opencord/voltha-protos/v3/go/tech_profile"
 	"golang.org/x/net/context"
@@ -143,7 +142,7 @@
 
 func (dt DtWorkFlow) ProvisionHsiaFlow(subs *Subscriber) error {
 	var err error
-	var flowID []uint32
+	var flowID uint32
 	var gemPortIDs []uint32
 
 	var allocID = subs.TpInstance[subs.TestConfig.TpIDList[0]].UsScheduler.AllocID
@@ -156,16 +155,13 @@
 		for pos, pbitSet := range strings.TrimPrefix(pBitMap, "0b") {
 			if pbitSet == '1' {
 				pcp := uint32(len(strings.TrimPrefix(pBitMap, "0b"))) - 1 - uint32(pos)
-				if flowID, err = subs.RsrMgr.ResourceMgrs[uint32(subs.PonIntf)].GetResourceID(context.Background(), uint32(subs.PonIntf),
-					ponresourcemanager.FLOW_ID, 1); err != nil {
+				if flowID, err = subs.RsrMgr.GetFlowID(context.Background(), uint32(subs.PonIntf)); err != nil {
 					return errors.New(ReasonCodeToReasonString(FLOW_ID_GENERATION_FAILED))
 				} else {
-					if err := AddFlow(subs, HsiaFlow, Upstream, flowID[0], allocID, gemID, pcp); err != nil {
-						subs.RsrMgr.ResourceMgrs[uint32(subs.PonIntf)].FreeResourceID(context.Background(), uint32(subs.PonIntf),
-							ponresourcemanager.FLOW_ID, flowID)
+					if err := AddFlow(subs, HsiaFlow, Upstream, flowID, allocID, gemID, pcp); err != nil {
 						return err
 					}
-					if err := AddFlow(subs, HsiaFlow, Downstream, flowID[0], allocID, gemID, pcp); err != nil {
+					if err := AddFlow(subs, HsiaFlow, Downstream, flowID, allocID, gemID, pcp); err != nil {
 						return err
 					}
 				}