Temporarily disable partial LSE.

Due to a bug in it. Add a regression test.

Bug: 197818595
Test: 828-partial-lse
Merged-In: I65da4f7ef09cd2a1f6c4b21799ecd7a42c1adac2
(cherry picked from commit 18074d2b59ae56dcfccea770ceb515215c8eb53f)
Change-Id: I3eb52dc091264e617bb711260fb4950d15c7f50b
7 files changed