Adding new CI tests: `test_tdma_extended` and `test_tdma_scripted`

New Features / Improvements

• tdma_scripted_node now sets rosparam server and attempts to delete rosparam server so re-launch does not use old cached value
• tdma_slotted_aloha now has ~aloha_slots = [] by default for test cases
• test_ros_acomms.py removed always_send_test_data case as test_tdma_extended.py now tests this case
• test_tdma_extended.py test cases added:
  • manual_transmit_queue
  • manual_transmit_queue, with always_send_test_data
  • software_mute
  • always_send_test_data
  • always_send_test_data, with miniframe data
  • always_send_test_data, with dataframe data
• test_tdma_scripted.py cases added:
  • test_cycling_rates_one_per_slot
  • test_cycling_rates_three_per_slot

Bug Fixes:

• pipeline now uses tag: pipeline_$CI_PIPELINE_ID instead of latest
  • e.g., ros_acomms-tests:latest is now ros_acomms-tests:pipeline_$CI_PIPELINE_ID
• #40 (closed) tdma scripted will burn it's very first active slot IF there is an active test plan. This assures the rates/buffer sizes are cycled according to the test plan from the very first packet in the slot.
• #40 (closed) tdma sets the parameters for the first transmit from the test plan rather than using values passed in launch for first TX
• #40 (closed) when the test plan is toggled on from an off state (or it's re-read while running via dynamic reconf) the next active slot will be burned (in case the user toggled during an active slot. This keeps the code simple for handling this case and we won't activate a test plan mid slot)