Fix testBuildCodenameConstants for UPSIDE_DOWN_CAKE

testBuildCodenameConstants was comparing the field name
"UPSIDE_DOWN_CAKE" to "UPSIDEDOWNCAKE" in knownCodenames.  Use
the field name without underscores instead.

Bug: 219519679
Test: atest "android.os.cts.BuildTest#testBuildCodenameConstants"
Change-Id: Ife18c31603b0b44bd57cd04f90a00fcd5abca115
(cherry picked from commit c2a7e4b0633f0fe84f8ed0bc9fabe105cc4e5776)
Merged-In: Ife18c31603b0b44bd57cd04f90a00fcd5abca115
1 file changed