chmod gatewaytests

[wmoore]

Need gateway tests to test chmod and canEdit() and canAnnotate() behavior.

[wmoore]

canEdit and canAnnotate tests are in ​https://github.com/will-moore/openmicroscopy/commits/chmod_web_8434 branch,
​https://github.com/will-moore/openmicroscopy/commit/4ce05cfe0a08f200a0af92ba1c71d1851be30bba and preceeding commits.

[wmoore]

In branch ​https://github.com/will-moore/openmicroscopy/commits/chmod_web_8434

Added chmodGroup to Blitz gateway: ​https://github.com/will-moore/openmicroscopy/commit/904f2bf75eeaccfc05f9522c87e610055bc05ca9

Also added test of this method that fails due to callback not returning:
​https://github.com/will-moore/openmicroscopy/commit/83af3fb027a66fe38fbbb2d057030bc2b4bd01d9

$ python test/gatewaytest/chmod.py ChmodGroupTest.testChmod
...
======================================================================
ERROR: testChmod (__main__.ChmodGroupTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "test/gatewaytest/chmod.py", line 112, in testChmod
    self.doChange(group_Id, READWRITE)
  File "test/gatewaytest/chmod.py", line 39, in doChange
    cb.loop(20, 500)
  File "/Users/will/Desktop/OMERO/dist/lib/python/omero/callbacks.py", line 242, in loop
    5000L, waited)
LockTimeout: exception ::omero::LockTimeout
{
    serverStackTrace = None
    serverExceptionClass = None
    message = Command unfinished after 10.0 seconds
    backOff = 5000
    seconds = 10.0
}

[Will Moore <will@…>]

(In [69eafea5dfd7e82721c6f6d923ac590c4ac2c53a/ome.git] on branch develop) Blitz canEdit, canAnnotate with failing tests. See #8439

Added these methods to BlitzObjectWrapper?, delegating to
the object's permissions.canEdit() etc.

Gateway tests fail, with canEdit() and canAnnotate()
returning True with another user's data in
a readonly 'rwr---' group.

[Will Moore <will@…>]

(In [83af3fb027a66fe38fbbb2d057030bc2b4bd01d9/ome.git] on branch develop) Add failing test of cmd.Chmod group. See #8439

The cmd.Chmod callback never returns. Even when left for several minutes.