Update git submodules

Update git submodules

* Update docs/submodules/modeling/modelspec.git from branch 'master'
  to ccd7fa20d6d02cb2e68c0c5955bb54d95dcb74e3
  - Slight update to Vnf

    Added a relationship between licensekeyinstance and VnfInstance.

    Issue-ID: MODELING-104

    Change-Id: I993845842765261b5e0c0c99d3e269ae6eb63bd8
    Signed-off-by: Kevin Scaggs <ks0567@att.com>
  - Slight update to Party

    Removed another relationship between partyrole of vendor and license

    Issue-ID: MODELING-104

    Change-Id: I2ac2b3f10775d6e451759d90e2fc1cf0b84f4c64
    Signed-off-by: Kevin Scaggs <ks0567@att.com>
  - Updates to License

    Further updates to license, including refiements of attributes to
    LicenseKeyInstance.

    Issue-ID: MODELING-104

    Change-Id: I4e889aa61f605c92318fb2c940f148e352d02d37
    Signed-off-by: Kevin Scaggs <ks0567@att.com>