test/py: gpt: add test for sub-command write

+ test write for one partition on all the device (size=0)
+ test write with disk uuid and 2 partitions

Acked-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
1 file changed