Investigate test failures from Tinkerpop standard suite

[tb06904]

After integrating the standard Tinkerpop test suite under #3126 and subsequent PRs there are many failures with the current Tinkerpop implementation.

Need to investigate the test failures that occur from running the Tinkerpop standard test suite and apply fixes for any smaller issues. Larger problems should be raised as new issues if new features are required or bugs need fixing. It's likely not all failures can be fixed but should be able to get a decent amount of the issues with the current implementation ironed out.