Cherry-pick from master
pr: #43299
Related to #43031
Previous pr: #43064
Since old version may create collection with invalidate collection name,
milvus shall allow some API to let user notice such collection still
exists.
This patch removes collection name validation from `DescribeCollection`
call, letting user know that such collection still exists.
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Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
issue: https://github.com/milvus-io/milvus/issues/38877
refactor pymilvus client v2 testcasebase
add a test for search hint
update pymilvus to 2.6
pr: #38939
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Signed-off-by: yanliang567 <yanliang.qiao@zilliz.com>
related issue: #36963
1. add alias tests with rename collection for issue #36963
2. update some test levels
3. fix some xfail tests
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Signed-off-by: yanliang567 <yanliang.qiao@zilliz.com>
