Inclusion of CPDP convergence OTG model

[indraniBh]

Issue: #390

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ReDoc Interactive Demo (redocly.github.io)

Objectives:

• Modify events with relevant parameters to enable control-plane and data-plane configuration
• Inclusion of control-plane and data-plane convergence metrics

Modified Existing Fields:

• Configuration:
  • events/cp_events
  • events/dp_events

New Fields Inclusions:

• Monitor
  • get_metrics/convergence/flow_name

Sample Code Snippet:

# new config
config = api.config()

# configure control-plane and data-plane events
config.events.cp_events.enable = True
config.events.dp_events.enable = True
config.events.dp_events.rx_rate_threshold = 90 

// skipping other config snippets
# configure flow properties
flw, = config.flows.flow(name='flw')
# enable flow metrics
flw.metrics.enable = True
// skipping other flow config snippets

# push configuration
api.set_config(config)

# start all protocols
control_state = api.control_state()
control_state.protocol.all.state = control_state.protocol.all.START
api.set_control_state(control_state)

# start transmitting configured flows
control_state = api.control_state()
control_state.traffic.choice = control_state.traffic.FLOW_TRANSMIT
control_state.traffic.flow_transmit.state = control_state.traffic.flow_transmit.START  # noqa
api.set_control_state(control_state)

# withdraw routes from primary path
 control_state = api.control_state()
 control_state.protocol.route.names = [rx2_rr.name, rx3_rr.name]
 control_state.protocol.route.state = control_state.route.WITHDRAW
 api.set_control_state(control_state)

# create a query for convergence metrics
req = api.metrics_request()
req.convergence.flow_names = [flw.name]

api.get_metrics(req)

[indraniBh]

Initial structure added.
TBD:
metric_group in convergence metrics

@arkajyoti-cloud

[kamalsahu0001]

Approved

[apratimmukherjee]

Good to have some basic impl. testing before merging the model.
Also good to have a suggestion for event timestamps on the reference time e.g. from start_traffic api call on a flow.