Adding friendly traces for debugging purposes in the process of parsing the context JSON

- Added support of the GET method to check status of PathComp
-Added support for showing logs via either Screen (stdout) or defined Log file

- Added deploy script used for tests

- Finished implementation of KDisjointPath algorithm
- Adjusted Algorithm interface
- Moved documentation and example test commands to misc folder

Common:
- temporarily added backend to pathcomp service for debug purposes

Proto:
- Added KDisjointPath Algorithm to pathcomp proto

Frontend:
- refactored Servicer to cope with multiple algorithms
- added implementation of ShortestPath algorithm
- added implementation of KShortestPath algorithm
- added implementation of KDisjointPath algorithm (partial)
- moved PathComp servicer tools to algorithms subfolder
- added new unitary test scenario (DC's with CellSiteGWs and Transport Network) to validate KDisjointPath algorithm

- integrated in deploy.sh script
- defined manifest

Merge branch 'develop' of https://gitlab.com/teraflow-h2020/controller into feat/pathcomp-component-frontend

refactor: fix tutorial deployment issues

See merge request teraflow-h2020/controller!168

refactor: fix tutorial deployment issues

See merge request teraflow-h2020/controller!162

Merge branch 'feat/microk8s-deployment' of https://gitlab.com/teraflow-h2020/controller into pr-tutorial

feat(automation): implement ztpUpdate()

See merge request teraflow-h2020/controller!164

Signed-off-by: gkatsikas <gkatsikas@ubitech.eu>

feat(automation): implement ztpDelete()

See merge request teraflow-h2020/controller!165

Fix Device after changes in Monitoring component

See merge request teraflow-h2020/controller!166

Fix unitary tests to align with changes in monitoring component information model.

Fix monitoring loops to align with changes in monitoring component information model.

Modifications in the monitoring information model and skeleton of the methods...

See merge request teraflow-h2020/controller!163

Merge branch 'develop' of https://gitlab.com/teraflow-h2020/controller into feat/pathcomp-component-frontend

- Implemented temporary hack to reduce memory used

Update 1-1-1-create-vm-oracle-virtualbox.md to clarify Ubuntu Server should be use instead of Desktop

refactor(policy): add validation at PolicyRuleDevice

See merge request teraflow-h2020/controller!161