Add EnvironmentApi

src/main/python/ddadevops/release_mixin/infrastructure_api.py

@@ -3,7 +3,7 @@ import re
 import subprocess as sub
 from abc import ABC, abstractmethod
 from pathlib import Path
-
+from os import environ
 
 class FileHandler(ABC):
 
@@ -235,3 +235,14 @@ class GitApi():
     def checkout(self, branch: str):
         self.system_api.run_checked('git', 'checkout', branch)
         return self.system_api.stdout
+
+class EnvironmentApi():
+
+    def __init__(self):
+        self.environ = environ
+
+    def get(self, key):
+        return self.environ[key]
+    
+    def set(self, key, value):
+        self.environ[key] = value