Adding default tests to all CLI tests via MetaClass.

* All CLI tests will inherit some default tests from the base class:
  * test_positive_create
  * test_positive_delete (TBD)
  * test_positive_update (TBD)
  * test_negative_create (TBD)
  * test_negative_delete (TBD)
  * test_negative_update (TBD)
Improve metaclass for cli tests

* Don't override methods if already defined on test class
* Add dynamic data to tests if defined in test class or use the default data
Added positive delete tests to metatest class.
Adding test_positive_update tests (WIP)
Adding more test data for metaclass.
Adding default tests to all CLI tests via MetaClass.

* All CLI tests will inherit some default tests from the base class:
  * test_positive_create
  * test_positive_delete (TBD)
  * test_positive_update (TBD)
  * test_negative_create (TBD)
  * test_negative_delete (TBD)
  * test_negative_update (TBD)
Improve metaclass for cli tests

* Don't override methods if already defined on test class
* Add dynamic data to tests if defined in test class or use the default data
Adding test_positive_update tests (WIP)
Added remaining template functions for CRUD tests.

Added remaining template functions for CRUD tests as well as expanded
docstrings to explain what the test does and the type of data it
expects. Also updated SSH module to show stderr messages only during
DEBUG mode.
Updated default data and templates for metaclass tests.