Update golden MD5 in decode_to_md5 test.
Update golden MD5 in decode_to_md5 test.

The bitstream has now changed as we enabled ALT_INTRA by default now, so
need to update the golden MD5.

BUG=aomedia:389

Change-Id: Ic62d1628e572e5ea252d6f6eef8d8312db62dbb8

luctrudeau/aom,GrokImageCompression/aom,smarter/aom,GrokImageCompression/aom,GrokImageCompression/aom,smarter/aom,smarter/aom,smarter/aom,luctrudeau/aom,luctrudeau/aom,luctrudeau/aom,GrokImageCompression/aom,smarter/aom,luctrudeau/aom,GrokImageCompression/aom,luctrudeau/aom,GrokImageCompression/aom,smarter/aom