Update git submodules

* Update docs/submodules/externalapi/nbi.git from branch 'master'
  to 7638d1ce560f7dccb15ae5f9900dc12e756a8784
  - Merge "Handle null orchestration-status"
  - Handle null orchestration-status
    
    Change-Id: Iaf0a036c2e49e5b3ac7dcdbd3442adf0b368c21b
    Issue-ID: EXTAPI-224
    Signed-off-by: aosull01 <adrian.osullivan@huawei.com>
    
1 file changed