These additional test cases check if the env section
can:
- export variables with their default value
- add variables with 'None' assigned only to
BB_ENV_PASSTHROUGH_ADDITIONS or to the deprecated
BB_ENV_EXTRAWHITE
- bitbake: make sure that variables actually make it into bitbake
The BB_ENV_EXTRAWHITE variable is still present, so a test case has also
been added for this.
Signed-off-by: Benedikt Niedermayr <benedikt.niedermayr@siemens.com>
[Jan: ensure python 3.5 compatibility, adjust copyright header]
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>