updates iosxr modules to support socket (#21231)

* updates all iosxr modules to support persistent socket
* adds iosxr action plugin to connect to device
* adds exec_command() to iosxr shared module
* fixes iosxr_config and iosxr_template local action
* update all unit test cases
* adds base test module for iosxr module testing

lib/ansible/utils/module_docs_fragments/iosxr.py

@@ -1,74 +0,0 @@
-#
-# (c) 2015, Peter Sprygada <psprygada@ansible.com>
-#
-# This file is part of Ansible
-#
-# Ansible is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# Ansible is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
-
-
-class ModuleDocFragment(object):
-
-    # Standard files documentation fragment
-    DOCUMENTATION = """
-options:
-  host:
-    description:
-      - Specifies the DNS host name or address for connecting to the remote
-        device over the specified transport.  The value of host is used as
-        the destination address for the transport.
-    required: true
-  port:
-    description:
-      - Specifies the port to use when building the connection to the remote.
-        device.
-    required: false
-    default: 22
-  username:
-    description:
-      - Configures the username to use to authenticate the connection to
-        the remote device.  This value is used to authenticate
-        the SSH session. If the value is not specified in the task, the
-        value of environment variable C(ANSIBLE_NET_USERNAME) will be used instead.
-    required: false
-  password:
-    description:
-      - Specifies the password to use to authenticate the connection to
-        the remote device.   This value is used to authenticate
-        the SSH session. If the value is not specified in the task, the
-        value of environment variable C(ANSIBLE_NET_PASSWORD) will be used instead.
-    required: false
-    default: null
-  timeout:
-    description:
-      - Specifies the timeout in seconds for communicating with the network device
-        for either connecting or sending commands.  If the timeout is
-        exceeded before the operation is completed, the module will error.
-    require: false
-    default: 10
-  ssh_keyfile:
-    description:
-      - Specifies the SSH key to use to authenticate the connection to
-        the remote device.   This value is the path to the
-        key used to authenticate the SSH session. If the value is not specified
-        in the task, the value of environment variable C(ANSIBLE_NET_SSH_KEYFILE)
-        will be used instead.
-    required: false
-  provider:
-    description:
-      - Convenience method that allows all I(iosxr) arguments to be passed as
-        a dict object.  All constraints (required, choices, etc) must be
-        met either by individual arguments or values in this dict.
-    required: false
-    default: null
-"""