Resource optimization for ppc64le

- all ppc64le galera builders moved to osuosl
- ub2004 debug and without-server moved to osuosl

Update ppc64le entries in master-private sample.

master-docker-nonstandard/master.cfg

@@ -239,7 +239,7 @@ addWorker(
 )
 
 ## Add Power workers
-for w_name in ["ppc64le-db-bbw"]:
+for w_name in ["ppc64le-osuosl-bbw"]:
     addWorker(
         w_name,
         1,

master-galera/master.cfg

@@ -203,7 +203,7 @@ for platform in all_platforms:
         worker_ids = range(5, 8)
         jobs = 4
     elif platform == "ppc64le":
-        machines = ["ppc64le-db-bbw"]
+        machines = ["ppc64le-osuosl-bbw"]
         worker_ids = [1]
         jobs = 12
     elif platform == "s390x":

master-private.cfg-sample

@@ -26,9 +26,9 @@ private["master-variables"] = {
                 'aarch64-bbw4',
             ],
         "ppc64le": [
-                'ppc64le-rhel8-bbw1',
                 'ppc64le-db-bbw1',
                 'ppc64le-raptor-bbw1',
+                'ppc64le-osuosl-bbw1',
             ],
         "s390x": [
                 's390x-bbw1',
@@ -68,9 +68,9 @@ private["docker_workers"]= {
     "hz-bbw6-docker":"tcp://IP_address:port",
     "gsk-bbw1-docker":"tcp://IP_address:port",
     "bm-bbw1-docker":"tcp://IP_address:port",
-    "ppc64le-rhel8-bbw1-docker":"tcp://IP_address:port",
     "ppc64le-db-bbw1-docker":"tcp://IP_address:port",
     "ppc64le-raptor-bbw1-docker":"tcp://IP_address:port",
+    "ppc64le-osuosl-bbw1-docker":"tcp://IP_address:port",
     "aarch64-bbw1-docker":"tcp://IP_address:port",
     "aarch64-bbw2-docker":"tcp://IP_address:port",
     "aarch64-bbw3-docker":"tcp://IP_address:port",