Enable multi-dex for coverage builds to fix breakage

Test: m PRODUCT-bullhead-userdebug showcommands dist EMMA_INSTRUMENT=true EMMA_INSTRUMENT_FRAMEWORK=true SKIP_BOOT_JARS_CHECK=true WITH_DEXPREOPT=false tests
Change-Id: I6a324cbd0dc078ad2903345a069385d9f0d179ff
1 file changed