Update olso modules

Now at oslo commit a08a622bc68c34291a116f7073511b02585d1c17

Change-Id: Ifd335dac76cdb880661cbd6378438fcebaf295cf
Stop periodic watcher tasks before deleting stack

In the case where a stack that has a watch task associated with it is
being deleted and the engine successfully acquires a lock, no attempt to
stop the stack will be made since it has no action in-progress.  This
will result in orphaned watcher tasks being left behind, since the
watcher tasks are normally stopped as part of the call to
ThreadGroup.stop().

To fix this, explicitly stop the periodic watcher tasks before calling
stack.delete().

Change-Id: Idf5b7c1100fc85743ac6dc5831731f7ecc96bfd6
Closes-Bug: #1315044
Merge "Update olso modules"
Merge "Stop periodic watcher tasks before deleting stack"