[TRAIN-Only] Remove __init__ from base strategy

There is a loading issues when running under py2 that causes errors
because of the way the base strategy is loaded. This change moves the
variable initialization out of the base and puts it in the strategies
themselves instead. It's a tiny bit of duplication but prevents loading
issues when running under py2.

Change-Id: I668590662dfed029a258bb21cb9c1100cee76652
Closes-Bug: #1904770

tripleo_ansible/ansible_plugins/strategy/tripleo_base.py

@@ -36,22 +36,6 @@ display = Display()
 
 class TripleoBase(StrategyBase):
 
-    def __init__(self, *args, **kwargs):
-        super(TripleoBase, self).__init__(*args, **kwargs)
-        self._any_errors_fatal = False
-        self._callback_sent = False
-        self._has_work = False
-        self._host_pinned = False
-        self._hosts_left = []
-        self._iterator = None
-        self._play_context = None
-        self._strat_results = []
-        self.noop_task = None
-        self._fail_cache = {}
-        # these were defined in 2.9
-        self._has_hosts_cache = False
-        self._has_hosts_cache_all = False
-
     def _print(self, msg, host=None, level=1):
         display.verbose(msg, host=host, caplevel=level)
 

tripleo_ansible/ansible_plugins/strategy/tripleo_free.py

@@ -80,6 +80,20 @@ class StrategyModule(BASE.TripleoBase):
 
     def __init__(self, *args, **kwargs):
         super(StrategyModule, self).__init__(*args, **kwargs)
+        self._any_errors_fatal = False
+        self._callback_sent = False
+        self._has_work = False
+        self._host_pinned = False
+        self._hosts_left = []
+        self._iterator = None
+        self._play_context = None
+        self._strat_results = []
+        self.noop_task = None
+        self._fail_cache = {}
+        # these were defined in 2.9
+        self._has_hosts_cache = False
+        self._has_hosts_cache_all = False
+        # free specific vars
         self._last_host = 0
         self._workers_free = 0
         self._run_once_tasks = set()

tripleo_ansible/ansible_plugins/strategy/tripleo_linear.py

@@ -75,6 +75,19 @@ class StrategyModule(BASE.TripleoBase):
 
     def __init__(self, *args, **kwargs):
         super(StrategyModule, self).__init__(*args, **kwargs)
+        self._any_errors_fatal = False
+        self._callback_sent = False
+        self._has_work = False
+        self._host_pinned = False
+        self._hosts_left = []
+        self._iterator = None
+        self._play_context = None
+        self._strat_results = []
+        self.noop_task = None
+        self._fail_cache = {}
+        # these were defined in 2.9
+        self._has_hosts_cache = False
+        self._has_hosts_cache_all = False
 
     def _create_noop_task(self):
         """Create noop task"""