Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Delete alt images before removing the account

    Else it could raise unauthorized exceptions [1].

    [1] https://build.opnfv.org/ci/view/functest/job/functest-apex-baremetal-daily-master/188/console

    Change-Id: Ia9b857069f775e2c8ecc5e07cf39b3a1fb7e3540
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
    (cherry picked from commit 28a706149ede8c644f63c7b5a4f3b02a9806e548)

  - Fix cloudify src dirs

    It completes "Refactor Ims testing" [1].

    [1] https://gerrit.opnfv.org/gerrit/60331

    Change-Id: I3d971a07ad1199ab48f81f7484d33e7f35d12377
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>