Fix "filename too long" issue on Luci caused by test name

Stop including fields in the test name for TestJavaSdkLibraryEnforce to
reduce its length to avoid the filename too long limit.

Test: m nothing
      Check the lengths before (~240) and after (~74) to make sure
      there was a sizeable reduction.
Change-Id: I275a1110e5102b8ea8376759f28c7c6333a5efee

java/java_test.go

@@ -831,7 +831,7 @@ func TestJavaSdkLibraryEnforce(t *testing.T) {
 	}
 
 	runTest := func(t *testing.T, info testConfigInfo, expectedErrorPattern string) {
-		t.Run(fmt.Sprintf("%#v", info), func(t *testing.T) {
+		t.Run(fmt.Sprintf("%v", info), func(t *testing.T) {
 			errorHandler := android.FixtureExpectsNoErrors
 			if expectedErrorPattern != "" {
 				errorHandler = android.FixtureExpectsAtLeastOneErrorMatchingPattern(expectedErrorPattern)