skippy callback plugin: hides banner for skipped tasks (#18621)

* Modified skippy callback plugin

* Added original skippy.py, moved plugin to full_skip.py

* Full skip: fixed code style

lib/ansible/plugins/callback/full_skip.py

@@ -0,0 +1,72 @@
+# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.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/>.
+
+# Make coding more python3-ish
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+from ansible.plugins.callback.default import CallbackModule as CallbackModule_default
+
+
+class CallbackModule(CallbackModule_default):
+
+    '''
+    This is the default callback interface, which simply prints messages
+    to stdout when new callback events are received.
+    '''
+
+    CALLBACK_VERSION = 2.0
+    CALLBACK_TYPE = 'stdout'
+    CALLBACK_NAME = 'full_skip'
+
+    def v2_runner_on_skipped(self, result):
+        self.outlines = []
+
+    def v2_playbook_item_on_skipped(self, result):
+        self.outlines = []
+
+    def v2_runner_item_on_skipped(self, result):
+        self.outlines = []
+
+    def v2_runner_on_failed(self, result, ignore_errors=False):
+        self.display()
+        super(CallbackModule, self).v2_runner_on_failed(result, ignore_errors)
+
+    def v2_playbook_on_task_start(self, task, is_conditional):
+        self.outlines = []
+        self.outlines.append("TASK [%s]" % task.get_name().strip())
+        if self._display.verbosity >= 2:
+            path = task.get_path()
+            if path:
+                self.outlines.append("task path: %s" % path)
+
+    def v2_playbook_item_on_ok(self, result):
+        self.display()
+        super(CallbackModule, self).v2_playbook_item_on_ok(result)
+
+    def v2_runner_on_ok(self, result):
+        self.display()
+        super(CallbackModule, self).v2_runner_on_ok(result)
+
+    def display(self):
+        if len(self.outlines) == 0:
+            return
+        (first, rest) = self.outlines[0], self.outlines[1:]
+        self._display.banner(first)
+        for line in rest:
+            self._display.display(line)
+        self.outlines = []