oeqa/sdk/cases: Migrate tests to the new OEQA framework
Summary of the changes:
- Remove auto extend_path using pkgutil at __init__, is not needed.
- Change base class to OESDKTestCase.
- Add td_vars attr to set dependencies of certain variables in test
data.
- Change skips from module level to class level because Test context
(tc)
now isn't at module level.
- Variable names changes to be consistent (i.e. sdktestdir ->
sdk_dir).
[YOCTO #10599]
- Don't use bb.utils functions use instead remove_safe and shutil
for copy files.
- SDKBuildProject pass test data variables instead of call getVar
inside.
