test Custom aws runners (#781)

* update to use custom, auto-scaling, self hosted runners on AWS
(tested and ready to go)

Co-authored-by: David Montenegro <[email protected]>

Author: jamcarbon

.github/workflows/coverage.yml

@@ -19,7 +19,7 @@ env:
 jobs:
   test:
     name: Coverage Report
-    runs-on: ubuntu-latest
+    runs-on: custom-runner-AWS
     steps:
       - name: Cancel Previous Runs
         # Only cancel non-master branch runs

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
         with:
           access_token: ${{ github.token }}
   build:
-    runs-on: [self-hosted, linux]
+    runs-on: custom-runner-AWS
     env:
       SCCACHE_CACHE_SIZE: "50G"
     needs: cancel