[OE-core] [PATCH V2 8/9] testimage.bbclass: update comments

[Robert Yang]

It's very important to add IMAGE_CLASSES += "testimage" in local.conf firstly,
otherwise the var like TEST_LOG_DIR (defined in testimage.bbclass) will not be
in testdata.json.

[YOCTO #11547]

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 meta/classes/testimage.bbclass | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/classes/testimage.bbclass b/meta/classes/testimage.bbclass
index 0c4a84e..6a43560 100644
--- a/meta/classes/testimage.bbclass
+++ b/meta/classes/testimage.bbclass
@@ -7,8 +7,8 @@
 # Most of the tests are commands run on target image over ssh.
 # To use it add testimage to global inherit and call your target image with -c testimage
 # You can try it out like this:
-# - first build a qemu core-image-sato
-# - add IMAGE_CLASSES += "testimage" in local.conf
+# - first add IMAGE_CLASSES += "testimage" in local.conf
+# - build a qemu core-image-sato
 # - then bitbake core-image-sato -c testimage. That will run a standard suite of tests.
 
 # You can set (or append to) TEST_SUITES in local.conf to select the tests
-- 
2.10.2