Merge heketi node operation tests in one class and fix library

Fix consists of -
- Use "**kwargs" approach in the "heketi_node_list"
  function as it is done in lots of other functions.
- Parse the CLI output in the "heketi_node_list" function
  using regex instead of the splitting and stripping strings.
- Combine test cases related to the same feature into one
  module - test_heketi_node_operations.py
- Remove redundant checks which already exist in common
  libraries.
- Remove unnecessary logging.

Change-Id: I815ddfbbacb765140229e7630ec87a6bbaa6255b
Signed-off-by: vamahaja <vamahaja@redhat.com>

0 files changed, 0 insertions, 0 deletions