2) Support to choose between "Jinja" and "pyangbind".
3) WebUI modification for creating services
4) Changes in ConfigRules multivendor to adapt to new features

- Updated VLAN Ids

- Code cleanup

- Added logic to filter src/dst candidate device and endpoint
- Corrected DLT recording logic

- Added logic to track and report num_released requests

- Added parametrization of availability, capacity and latency constraints in services and slices

- Added metrics port to manifest
- Added service monitor manifest
- Added metrics server
- Extended RequestGenerator to retrieve request_type
- Extended RequestScheduler to monitor setup and teardown requests and type of requests

- Fixed L2NM service generation

- Reduced log levels to INFO
- Generalized paths
- Minor code and comment cleanup

- Updated number of 9's for availability

- Updated number of 9's for availability

- Added availability percentage to SLA Availability constraint

- Removed availability percentage from SLA Availability constraint (new feature)

- Extracted constant MAX_WORKER_THREADS
- Rounded SLA values to 2 decimal digits

- Corrected Constraint definitions
- Corrected termination conditions
- Added randomness in constraint values

- Added/Updated headers
- Added script to update copyright headers

- corrected device name retrieval
- corrected composition of router_ids and and IP addresses
- minor code formatting

- Converted load_gen tool into a microservice
- Added simple WebUI page to manage it
- Created manifests, Dockerfile, etc.
- Created proto file to manage the load generator

- added support for microwave services
- removed DLT from default list of components
- added support to re-use endpoints in a single device for multiple connections

- fixing L3NM tests

- added support to record load-gen operations in DLT to take performance evaluation metrics
- improved mixed request support

- added support to request slices

- updated default config
- fixed issue with compatible dst endpoint selection

- added support for L3NM and TAPI services

- created new load generator tool to stress TeraFlowSDN
- added descriptor file to populate topologies
- added helper script to run it