Move Config creation out of Context constructor

This helps to avoid circular dependencies. It also allows the Config
constructor to make use of the global context.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

kas/build.py

@@ -25,6 +25,7 @@
 
 import os
 from .context import create_global_context
+from .config import Config
 from .libkas import find_program, run_cmd, kasplugin
 from .libcmds import (Macro, Command, SetupDir, CleanupSSHAgent,
                       SetupSSHAgent, SetupEnviron, SetupRepos,
@@ -71,7 +72,9 @@ class Build:
         if args.cmd != 'build':
             return False
 
-        ctx = create_global_context(args.config, args.target, args.task)
+        ctx = create_global_context()
+        ctx.config = Config(args.config, args.target, args.task)
+        ctx.config.set_context(ctx)
 
         macro = Macro()