runtime/python: fix python test result parser bug
runtime/python: fix python test result parser bug

Pyton test result is unable to be parsed in its parser function.
Fix the bug by adding a list check.

Signed-off-by: Zhang Jingke <0979c04a6d09a3b3c8dd699e3664fb112fdd2a5b@intel.com>

wanghongjuan/meta-iotqa-1,ostroproject/meta-iotqa,wanghongjuan/meta-iotqa-1,wanghongjuan/meta-iotqa-1,ostroproject/meta-iotqa,daweiwu/meta-iotqa-1,ostroproject/meta-iotqa,daweiwu/meta-iotqa-1,daweiwu/meta-iotqa-1,ostroproject/meta-iotqa,daweiwu/meta-iotqa-1,wanghongjuan/meta-iotqa-1,ostroproject/meta-iotqa,daweiwu/meta-iotqa-1,wanghongjuan/meta-iotqa-1