Feature #2622 forecast climatology (#2696)

* remove support for old environment variables CLIMO_MEAN_FILE and CLIMO_STDEV_FILE that were used in METplus versions earlier than v4.0.0

* fixed SonarQube bugs

* add better error checking for DockerHub queries that occasionally fail in GHA

* update pycharm files

* per #2622, support setting climo_mean and climo_stdev dictionary values inside fcst and obs dictionaries for grid_stat, ensemble_stat, point_stat, and series_analysis. Quietly add support for setting climo dictionaries inside the ens dictionary for gen_ens_prod -- this support is not needed because there is only 1 dictionary that may contain the climo dicts, but adding support for completeness so it can be assumed that {APP_NAME}_{DICT}_{SUBDICT}_{VAR} is supported, e.g. GEN_ENS_PROD_ENS_CLIMO_MEAN_REGRID_METHOD

* turn on use cases that started failing from MET changes

* turn off all use cases from push events 

* reorder assert so that expected vs. actual in PyCharm diff are accurate

* remove commented code

* added unit tests for climo VAR<n> variables that were missing

* add VAR<n> variables used to specify climo_mean/stdev field values

.github/jobs/docker_utils.py

@@ -41,8 +41,11 @@ def docker_get_volumes_last_updated(current_branch):
     dockerhub_url = get_dockerhub_url(current_branch)
     dockerhub_request = requests.get(dockerhub_url, timeout=90)
     if dockerhub_request.status_code != 200:
-        print(f"Could not find DockerHub URL: {dockerhub_url}")
-        return None
+        print(f"Retrying DockerHub request: {dockerhub_url}")
+        dockerhub_request = requests.get(dockerhub_url, timeout=60)
+        if dockerhub_request.status_code != 200:
+            print(f"Could not query DockerHub URL: {dockerhub_url}")
+            return None
 
     # get version number to search for if main_vX.Y branch
     if current_branch.startswith('main_v'):

.github/parm/use_case_groups.json

@@ -198,12 +198,12 @@
   {
     "category": "s2s_mid_lat",
     "index_list": "0-2",
-    "run": true
+    "run": false
   },
   {
     "category": "s2s_mid_lat",
     "index_list": "3",
-    "run": true
+    "run": false
   },
   {
     "category": "s2s_mjo",