Add test for getObjects('MapAnnotation')

[will-moore]

What this PR does

Adds test for fix at ome/omero-py#464

Also, I noticed that the checks like assert m.OMERO_TYPE == mapAnn.OMERO_TYPE only test that the wrapper is the correct type, NOT that the underlying omero.model object is correct (which is what's fixed in the PR above). So I added this check for the other types above.

Testing this PR

1. Should be tested by integration tests - best to also try exclude the PR above to check that test fails

cc @dominikl

[will-moore]

docker build failed with...

#37 1.634 retrieve:
#37 1.634 :: Apache Ivy 2.4.0 - 20141213170938 :: http://ant.apache.org/ivy/ ::
#37 1.639 :: loading settings :: file = /src/etc/ivysettings.xml
#37 1.799 WARNING: An illegal reflective access operation has occurred
#37 1.799 WARNING: Illegal reflective access by org.apache.ivy.util.url.IvyAuthenticator (file:/src/lib/repository/ivy-2.4.0.jar) to field java.net.Authenticator.theAuthenticator
#37 1.799 WARNING: Please consider reporting this to the maintainers of org.apache.ivy.util.url.IvyAuthenticator
#37 1.799 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
#37 1.799 WARNING: All illegal access operations will be denied in a future release
#37 422.6 :: problems summary ::
#37 422.6 :::: WARNINGS
#37 422.6 		[FAILED     ] cisd#jhdf5;19.04.1!jhdf5.jar: Downloaded file size doesn't match expected Content Length for https://artifacts.openmicroscopy.org/artifactory/maven/cisd/jhdf5/19.04.1/jhdf5-19.04.1.jar. Please retry. (337356ms)
#37 422.6 		[FAILED     ] cisd#jhdf5;19.04.1!jhdf5.jar: Downloaded file size doesn't match expected Content Length for https://artifacts.openmicroscopy.org/artifactory/maven/cisd/jhdf5/19.04.1/jhdf5-19.04.1.jar. Please retry. (337356ms)
#37 422.6 	==== ome-artifactory: tried
#37 422.6 	  https://artifacts.openmicroscopy.org/artifactory/maven/cisd/jhdf5/19.04.1/jhdf5-19.04.1.jar
#37 422.6 		::::::::::::::::::::::::::::::::::::::::::::::
#37 422.6 		::              FAILED DOWNLOADS            ::
#37 422.6 		:: ^ see resolution messages for details  ^ ::
#37 422.6 		::::::::::::::::::::::::::::::::::::::::::::::
#37 422.6 		:: cisd#jhdf5;19.04.1!jhdf5.jar
#37 422.6 		::::::::::::::::::::::::::::::::::::::::::::::
#37 422.6 
#37 422.6 
#37 422.6 :: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS
#37 422.6 
#37 422.6 BUILD FAILED
#37 422.6 /src/build.xml:102: The following error occurred while executing this line:
#37 422.6 /src/components/antlib/resources/global.xml:316: The following error occurred while executing this line:
#37 422.6 /src/components/antlib/resources/lifecycle.xml:67: impossible to resolve dependencies:
#37 422.6 	resolve failed - see output for details
#37 422.6 
#37 422.6 Total time: 7 minutes 2 seconds
#37 ERROR: process "/bin/sh -c ./build.py" did not complete successfully: exit code: 1

Any ideas @jburel?