oe-selftest: devtool: DevtoolIdeSdkTests debug logging

oe-selftest: devtool: DevtoolIdeSdkTests debug logging

Add optional debug logging to all runCmd calls in DevtoolIdeSdkTests
to improve debugging capabilities when tests fail. The logging is only
enabled when the test logger is set to DEBUG level.

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>