Add config parser functionality

Signed-off-by: Václav Valíček <valicek1994@gmail.com>

tests/lib/test_cloner_config.py

@@ -66,7 +66,7 @@ def test_set_property():
 	# invalid type
 	with pytest.raises(ValueError) as exc:
 		x._set_property("cloner_interval", "č")
-	assert exc.exconly() == "ValueError: Invalid value for key cloner_interval: type is <class 'str'>"
+	assert exc.exconly() == "ValueError: Invalid value for key cloner_interval: type is <class 'str'> instead of <class 'int'>, conversion failed"
 
 	x._set_property("cloner_project_name", "č")
 
@@ -74,3 +74,15 @@ def test_set_property():
 	with pytest.raises(KeyError) as exc:
 		x._set_property("nonexistent_key", 888)
 	assert exc.exconly() == "KeyError: 'nonexistent_key is not recognized config option'"
+
+	# boolean conversion
+	x._set_property("cloner_submodules", "1")
+	assert x.cloner_submodules == True
+
+	x._set_property("cloner_submodules", "0")
+	assert x.cloner_submodules == False
+
+	# integer conversion
+	x._set_property("cloner_interval", 60)
+	assert x.cloner_interval == 60
+