add poetry and pre-commit

.pre-commit-config.yaml

+---
+
+repos:
+  - repo: https://github.com/ambv/black
+    rev: stable
+    hooks:
+      - id: black
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: master
+    hooks:
+      - id: flake8
+
+...

pyproject.toml

+[tool.poetry]
+name = "envsetup"
+version = "0.1.0"
+description = "Deploy, configure and test UbiCast solutions."
+authors = ["UbiCast <sysadmin@ubicast.eu>"]
+
+[tool.poetry.dependencies]
+python = "^3.5"
+pyspf = "2.0.11"
+pyOpenSSL = "^19.0"
+requests = "^2.21"
+psutil = "^5.6"
+defusedxml = "^0.6.0"
+
+[tool.poetry.dev-dependencies]
+pylint = "^2.3"
+flake8 = "^3.7"
+black = {version = "*",allows-prereleases = true,python = "^3.6"}
+pysnooper = "^0.0.23"
+bandit = "^1.5"
+pre-commit = "^1.15"
+
+[build-system]
+requires = ["poetry>=0.12"]
+build-backend = "poetry.masonry.api"