Adding slx_command module and supporting module_utils. (#38235)

* Adding slx_command module and supporting module_utils.

This commit adds the slx_command module and tests as well as the
required slxos module_utils.

* Update copyright in header

* Adding missing module init

* Cleaning up shebangs/licensing.

* Incorporating feedback

Removing reference to `waitfor` alias in `slxos_command` module.
Adding `Extreme Networks` to `short_description` of `slxos_command` module.

* Adding cliconf tests

* Fixing 3.X tests

* Adding docstrings to test methods for slxos cliconf tests

* Adding slxos terminal tests

* Adding slxos module_utils tests

* Adding Extreme Networks team members to BOTMETA.yml

lib/ansible/plugins/terminal/slxos.py

@@ -0,0 +1,54 @@
+#
+# (c) 2018 Extreme Networks Inc.
+#
+# 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/>.
+#
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+import re
+
+from ansible.errors import AnsibleConnectionFailure
+from ansible.plugins.terminal import TerminalBase
+
+
+class TerminalModule(TerminalBase):
+
+    terminal_stdout_re = [
+        re.compile(br"([\r\n]|(\x1b\[\?7h))[\w\+\-\.:\/\[\]]+(?:\([^\)]+\)){0,3}(?:[>#]) ?$")
+    ]
+
+    terminal_stderr_re = [
+        re.compile(br"% ?Error"),
+        # re.compile(br"^% \w+", re.M),
+        re.compile(br"% ?Bad secret"),
+        re.compile(br"[\r\n%] Bad passwords"),
+        re.compile(br"invalid input", re.I),
+        re.compile(br"(?:incomplete|ambiguous) command", re.I),
+        re.compile(br"connection timed out", re.I),
+        re.compile(br"[^\r\n]+ not found"),
+        re.compile(br"'[^']' +returned error code: ?\d+"),
+        re.compile(br"Bad mask", re.I),
+        re.compile(br"% ?(\S+) ?overlaps with ?(\S+)", re.I),
+        re.compile(br"[%\S] ?Informational: ?[\s]+", re.I),
+        re.compile(br"syntax error: unknown argument.", re.I)
+    ]
+
+    def on_open_shell(self):
+        try:
+            self._exec_cli_command(u'terminal length 0')
+        except AnsibleConnectionFailure:
+            raise AnsibleConnectionFailure('unable to set terminal parameters')