MdeModulePkg:Fix a bug that HttpLib can not parse Ipv6 address correctly.

MdeModulePkg:Fix a bug that HttpLib can not parse Ipv6 address correctly.

When parsing the authority component of the input URL, it can not distinguish
the ":" is the flag that indicates the port or the separator between
the ipv6 address.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Zhang Lubo <lubo.zhang@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Wu Jiaxin <jiaxin.wu@intel.com>
Reviewed-by: Gary Ching-Pang Lin <glin@suse.com>
git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18744 6f19259b-4bc3-4df7-8a09-765794883524