Expicitly include unordered_map for older versions of gcc.
Expicitly include unordered_map for older versions of gcc.

Change-Id: I113b0e8ec209253fdc9d15dd009e539d0e0c9d52

giosalv/526-aladdin,giosalv/526-aladdin,giosalv/526-aladdin,giosalv/526-aladdin