Add waveinit and waveprep to half-cycle. (NOAA-EMC#2037)

This PR addresses issue NOAA-EMC#1444. The `waveinit` and `waveprep` tasks have been added to
the GDAS have cycle. The downstream dependencies for the respective GFS and GDAS
forecast tasks have been removed.

Resolves NOAA-EMC#1444

workflow/rocoto/gfs_tasks.py

@@ -110,15 +110,17 @@ def waveinit(self):
 
         resources = self.get_resource('waveinit')
         dependencies = None
+        cycledef = None
         if self.app_config.mode in ['cycled']:
             deps = []
             dep_dict = {'type': 'task', 'name': f'{self.cdump}prep'}
             deps.append(rocoto.add_dependency(dep_dict))
-            dep_dict = {'type': 'cycleexist', 'condition': 'not', 'offset': '-06:00:00'}
-            deps.append(rocoto.add_dependency(dep_dict))
+            if self.cdump in ['gdas']:
+                dep_dict = {'type': 'cycleexist', 'condition': 'not', 'offset': '-06:00:00'}
+                deps.append(rocoto.add_dependency(dep_dict))
             dependencies = rocoto.create_dependency(dep_condition='or', dep=deps)
-
-        task = create_wf_task('waveinit', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+            cycledef = 'gdas_half,gdas' if self.cdump in ['gdas'] else self.cdump
+        task = create_wf_task('waveinit', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies, cycledef=cycledef)
 
         return task
 
@@ -128,9 +130,9 @@ def waveprep(self):
         dep_dict = {'type': 'task', 'name': f'{self.cdump}waveinit'}
         deps.append(rocoto.add_dependency(dep_dict))
         dependencies = rocoto.create_dependency(dep=deps)
-
+        cycledef = 'gdas_half,gdas' if self.cdump in ['gdas'] else self.cdump
         resources = self.get_resource('waveprep')
-        task = create_wf_task('waveprep', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies)
+        task = create_wf_task('waveprep', resources, cdump=self.cdump, envar=self.envars, dependency=dependencies, cycledef=cycledef)
 
         return task
 
@@ -488,6 +490,8 @@ def _fcst_forecast_only(self):
             wave_job = 'waveprep' if self.app_config.model_app in ['ATMW'] else 'waveinit'
             dep_dict = {'type': 'task', 'name': f'{self.cdump}{wave_job}'}
             dependencies.append(rocoto.add_dependency(dep_dict))
+            dep_dict = {'type': 'task', 'name': f'{self.cdump}waveinit'}
+            dependencies.append(rocoto.add_dependency(dep_dict))
 
         if self.app_config.do_aero:
             # Calculate offset based on CDUMP = gfs | gdas
@@ -521,10 +525,6 @@ def _fcst_cycled(self):
             dep_dict = {'type': 'task', 'name': f'{self.cdump}ocnanalpost'}
             dependencies.append(rocoto.add_dependency(dep_dict))
 
-        if self.app_config.do_wave and self.cdump in self.app_config.wave_cdumps:
-            dep_dict = {'type': 'task', 'name': f'{self.cdump}waveprep'}
-            dependencies.append(rocoto.add_dependency(dep_dict))
-
         if self.app_config.do_aero:
             dep_dict = {'type': 'task', 'name': f'{self.cdump}aeroanlfinal'}
             dependencies.append(rocoto.add_dependency(dep_dict))
@@ -540,6 +540,11 @@ def _fcst_cycled(self):
             dependencies.append(rocoto.add_dependency(dep_dict))
             dependencies = rocoto.create_dependency(dep_condition='or', dep=dependencies)
 
+        if self.app_config.do_wave and self.cdump in self.app_config.wave_cdumps:
+            dep_dict = {'type': 'task', 'name': f'{self.cdump}waveprep'}
+            dependencies.append(rocoto.add_dependency(dep_dict))
+            dependencies = rocoto.create_dependency(dep_condition='and', dep=dependencies)
+
         cycledef = 'gdas_half,gdas' if self.cdump in ['gdas'] else self.cdump
 
         resources = self.get_resource('fcst')