Allow wildcards in java_resource_dirs

Expand java_resource_dirs using ctx.Glob before globbing inside it
in case it has wildcards in it.  Fixes:
internal error: panic in GenerateBuildActions for module "icu4j" variant "linux_glibc_common"
path "external/icu/icu4j/main/classes/charset/src/META-INF" does not start with "external/icu/icu4j/main/classes/*/src"

Test: java_test.go
Change-Id: Icd28b7a3dd14752642fb0ec8d41bbd6e30f81a68