Update git submodules

* Update docs/submodules/msb/apigateway.git from branch 'master'
  to a05a45fe19bcae74be121b3b91bc8dd9ff6f7d7e
  - Merge "Enable headers with _"
  - Enable headers with _
    
    Issue-ID: MSB-374
    
    Change-Id: Ie933c02c74b02420745870716e756299020a8123
    Signed-off-by: Kanagaraj M <kanagaraj.manickam@huawei.com>
    
1 file changed