fix: update normalization for ignoreDifferences on server-side diff (#747)

* WIP fix: update normalization for ignoreDifferences on server-side diff

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

* fix linter

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

* refactor

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

* skip pre-normalization for ssd

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

* skip pre-normalization for ssd

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

* docs

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

* modify Normalize to skip ignoreDifferences conditionally

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

* ignoreDifferences for SSD and test backwards compatible

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

* rename flags for clarity

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

* doc change

Signed-off-by: Peter Jiang <peterjiang823@gmail.com>

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Signed-off-by: Peter Jiang <peterjiang823@gmail.com>