Modified tests to workaround TF #29439 issue and checked the compatibility with TF 1.13.1 and 1.14.0rc0

[danieltudosiu]

Modified the tests as a workaround the TF #29439 issue and modified t…he crf.py and misc_io.py to work with TF 1.13.1 and 1.14.0rc0.

Status

READY

Description

The aim of the branch was to solve the TF #29439 issue which was done by creating our own testing case class which inherits from the TF one and deletes the test_case method (bad oop design, but temporary).

Also, the codebase was tested against TF 1.13.1 and 1.14.0rc0 and the required changes to work were made.

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] My code follows the code style of this project.
• [x] All new and existing tests passed.

Impacted Areas in Application

Nearly all tests CRF Layer misc_io.py

[ericspod]

It's failing 2 of the early stopping tests. @tomvars any idea?