Update core and service team in OWNERS_ALIASES (#53)

Issue #, if available: N/A

Description of changes: N/A

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Author: brycahta

OWNERS_ALIASES

@@ -4,11 +4,9 @@ aliases:
   # Always allow the core ACK maintainers to have access to your repository
   core-ack-team:
     - jaypipes
-    - mhausenblas
     - a-hilaly
     - RedbackThomson
     - vijtrip2
-  # TODO: Add your team members to your team controller alias
   service-team:
     - brycahta
-    - bwagner5
+    - pdk27