CapsulePei coalesce need add more sanity check for each Capsule Fragment.

Signed-off by: jiewen yao <jiewen.yao@intel.com>
Reviewed by: elvin li <elvin.li@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15137 6f19259b-4bc3-4df7-8a09-765794883524

Author: jyao1