Update API, spec, tests, k8s conf to conform to API guidelines

Paths were using underscores instead of hyphens in paths. This patch resolves the actual endpoints, spec, tests, and k8s routes that serve the endpoints.

spec/openapi.yaml

@@ -12,7 +12,7 @@ servers:
    description: Production endpoint for the membership portal data
 
 paths:
-   /working_groups:
+   /working-groups:
       get:
          tags:
          - Working Groups
@@ -34,7 +34,7 @@ paths:
             500:
                description: Error while retrieving data
 
-   /working_groups/{alias}:
+   /working-groups/{alias}:
       parameters:
       -  name: alias
          in: path
@@ -57,7 +57,7 @@ paths:
             500:
                description: Error while retrieving data
 
-   /working_groups/{alias}/resources:
+   /working-groups/{alias}/resources:
       parameters:
       -  name: alias
          in: path
@@ -80,7 +80,7 @@ paths:
             500:
                description: Error while retrieving data               
 
-   /working_groups/{alias}/levels:
+   /working-groups/{alias}/levels:
       parameters:
       -  name: alias
          in: path
@@ -103,7 +103,7 @@ paths:
             500:
                description: Error while retrieving data
 
-   /working_groups/{alias}/agreements:
+   /working-groups/{alias}/agreements:
       parameters:
       -  name: alias
          in: path