Update git submodules

Update git submodules

* Update watcher from branch 'master'
  to 1d32e734f34db23b5aa444f9c3d22a13bef058b1
  - Retry calls to nova API when connection errors are detected

    Currently, when a call to the Nova API fails for any connection
    temporary issue, Watcher actions fail.

    This patch is adding retries to nova api calls when connection issues
    are detected. The retries can be configured with new parameters in the
    nova section:

    - http_retries (default is 3 retries)
    - http_retry_interval (default is 2 seconds).

    Note that, in order to implement the retries in all the nova_helper
    methods, in some cases i am adding new elementary calls which are called
    by more complex ones.

    Closes-Bug: #2133934

    Change-Id: I587920f9e287cec2df3489b13c4ef78013de1876
    Signed-off-by: Alfredo Moralejo <amoralej@redhat.com>