Temporarily make obu non-default

This allows nightly tests to detect other failure. This experiment
will be re-enabled by default once we fix the issue#1143.

BUG=aomedia:1143

Change-Id: I5891039c0666f8a92aa128f3540751d5804a2d9a

build/cmake/aom_config_defaults.cmake

diff --git a/build/cmake/aom_config_defaults.cmake b/build/cmake/aom_config_defaults.cmake
index 862bb42..075e808 100644
--- a/build/cmake/aom_config_defaults.cmake
+++ b/build/cmake/aom_config_defaults.cmake
@@ -168,7 +168,7 @@
 set(CONFIG_MV_COMPRESS 1 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_NEW_QUANT 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_NO_FRAME_CONTEXT_SIGNALING 0 CACHE NUMBER "AV1 experiment flag.")
-set(CONFIG_OBU 1 CACHE NUMBER "AV1 experiment flag.")
+set(CONFIG_OBU 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_OBU_NO_IVF 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_OPT_REF_MV 0 CACHE NUMBER "AV1 experiment flag.")
 set(CONFIG_PALETTE_THROUGHPUT 1 CACHE NUMBER "AV1 experiment flag.")

configure

diff --git a/configure b/configure
index 076bc84..f2d7b6a 100755
--- a/configure
+++ b/configure
@@ -509,7 +509,7 @@
       soft_enable ext_comp_refs
       soft_enable ext_delta_q
       soft_enable parallel_deblocking
-      soft_enable obu
+      #soft_enable obu
       soft_enable simple_bwd_adapt
       soft_enable loopfilter_level
       soft_enable cfl