made squashable with_ plugin list configurable

partially deals with #11383

lib/ansible/constants.py

@@ -167,7 +167,9 @@ DEFAULT_BECOME_FLAGS      = get_config(p, 'privilege_escalation', 'become_flags'
 DEFAULT_BECOME_ASK_PASS   = get_config(p, 'privilege_escalation', 'become_ask_pass', 'ANSIBLE_BECOME_ASK_PASS', False, boolean=True)
 
 
-# Plugin paths
+# PLUGINS
+DEFAULT_SQUASH_ACTIONS         = get_config(p, DEFAULTS, 'squash_actions',     'ANSIBLE_SQUASH_ACTIONS', "apt, yum, pkgng, zypper, dnf", islist=True)
+# paths
 DEFAULT_ACTION_PLUGIN_PATH     = get_config(p, DEFAULTS, 'action_plugins',     'ANSIBLE_ACTION_PLUGINS', '~/.ansible/plugins/action_plugins:/usr/share/ansible_plugins/action_plugins')
 DEFAULT_CACHE_PLUGIN_PATH      = get_config(p, DEFAULTS, 'cache_plugins',      'ANSIBLE_CACHE_PLUGINS', '~/.ansible/plugins/cache_plugins:/usr/share/ansible_plugins/cache_plugins')
 DEFAULT_CALLBACK_PLUGIN_PATH   = get_config(p, DEFAULTS, 'callback_plugins',   'ANSIBLE_CALLBACK_PLUGINS', '~/.ansible/plugins/callback_plugins:/usr/share/ansible_plugins/callback_plugins')
@@ -176,7 +178,7 @@ DEFAULT_LOOKUP_PLUGIN_PATH     = get_config(p, DEFAULTS, 'lookup_plugins',     '
 DEFAULT_VARS_PLUGIN_PATH       = get_config(p, DEFAULTS, 'vars_plugins',       'ANSIBLE_VARS_PLUGINS', '~/.ansible/plugins/vars_plugins:/usr/share/ansible_plugins/vars_plugins')
 DEFAULT_FILTER_PLUGIN_PATH     = get_config(p, DEFAULTS, 'filter_plugins',     'ANSIBLE_FILTER_PLUGINS', '~/.ansible/plugins/filter_plugins:/usr/share/ansible_plugins/filter_plugins')
 DEFAULT_STDOUT_CALLBACK        = get_config(p, DEFAULTS, 'stdout_callback',    'ANSIBLE_STDOUT_CALLBACK', 'default')
-
+# cache
 CACHE_PLUGIN                   = get_config(p, DEFAULTS, 'fact_caching', 'ANSIBLE_CACHE_PLUGIN', 'memory')
 CACHE_PLUGIN_CONNECTION        = get_config(p, DEFAULTS, 'fact_caching_connection', 'ANSIBLE_CACHE_PLUGIN_CONNECTION', None)
 CACHE_PLUGIN_PREFIX            = get_config(p, DEFAULTS, 'fact_caching_prefix', 'ANSIBLE_CACHE_PLUGIN_PREFIX', 'ansible_facts')
@@ -205,6 +207,7 @@ ANSIBLE_SSH_PIPELINING         = get_config(p, 'ssh_connection', 'pipelining', '
 ANSIBLE_SSH_RETRIES            = get_config(p, 'ssh_connection', 'retries', 'ANSIBLE_SSH_RETRIES', 0, integer=True)
 PARAMIKO_RECORD_HOST_KEYS      = get_config(p, 'paramiko_connection', 'record_host_keys', 'ANSIBLE_PARAMIKO_RECORD_HOST_KEYS', True, boolean=True)
 
+
 # obsolete -- will be formally removed
 ZEROMQ_PORT                    = get_config(p, 'fireball_connection', 'zeromq_port', 'ANSIBLE_ZEROMQ_PORT', 5099, integer=True)
 ACCELERATE_PORT                = get_config(p, 'accelerate', 'accelerate_port', 'ACCELERATE_PORT', 5099, integer=True)

lib/ansible/executor/task_executor.py

@@ -50,7 +50,7 @@ class TaskExecutor:
 
     # Modules that we optimize by squashing loop items into a single call to
     # the module
-    SQUASH_ACTIONS = frozenset(('apt', 'yum', 'pkgng', 'zypper', 'dnf'))
+    SQUASH_ACTIONS = frozenset(C.DEFAULT_SQUASH_ACTIONS)
 
     def __init__(self, host, task, job_vars, connection_info, new_stdin, loader, shared_loader_obj):
         self._host              = host