Remove unnecessary features from cli_command (#43829)

* Remove wait_for & associated params

* Upgrade command dict to top-level, remove more wait_for accessories

* We don't need all this anymore

* Update docs

* Update tests to new argspec

* Be a little more explicit about sendonly

Also remove reference to the word provider.

* Add example of prompt and answer

test/integration/targets/junos_command/tasks/cli.yaml

@@ -0,0 +1,16 @@
+---
+- name: collect all cli test cases
+  find:
+    paths: "{{ role_path }}/tests/cli"
+    patterns: "{{ testcase }}.yaml"
+  register: test_cases
+  delegate_to: localhost
+
+- name: set test_items
+  set_fact: test_items="{{ test_cases.files | map(attribute='path') | list }}"
+
+- name: run test case (connection=network_cli)
+  include: "{{ test_case_to_run }} ansible_connection=network_cli"
+  with_items: "{{ test_items }}"
+  loop_control:
+    loop_var: test_case_to_run

test/integration/targets/junos_command/tasks/main.yaml

@@ -2,3 +2,4 @@
 - { include: netconf_xml.yaml, tags: ['netconf', 'xml'] }
 - { include: netconf_text.yaml, tags: ['netconf', 'text'] }
 - { include: netconf_json.yaml, tags: ['netconf', 'json'] }
+- { include: cli.yaml, tags: ['cli'] }