Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Protect vs OS_TENANT_NAME or _ID in shaker

    It fixes the possible mismatch if both OS_TENANT and OS_PROJECT are
    set [1].

    [1] https://build.opnfv.org/ci/view/functest/job/functest-apex-baremetal-daily-master/lastFailedBuild/console

    Change-Id: I66b6e3cf30a34aff1234da00cdd6b40da92089e5
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
  - Detect admin or Admin role

    As Keystone roles are case insensitive, Admin is checked as well.

    Change-Id: I28a611add7890c3188a289d1e24c043d88c34ea1
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>