test initialization waits for load balanced environment

[ehennum]

Add optional waits after REST API server property and modules database changes when setting up test environments before executing modules database resources.

[ehennum]

After this change to the test execution, 5 unit tests for the Java API (one because the converter libraries aren't installed) and 1 unit test for DMSDK still fail.

As can be seen from Common.java, the waits are enabled by setting the TEST_WAIT system property to true. The waits occur after changes to the REST API properties or to the modules database.