Consolidate config files and fix path

Signed-off-by: Carlisia <carlisia@vmware.com>

.github/assign_author.yml

@@ -1 +0,0 @@
-addAssignees: author

.github/auto-assignees.yaml

@@ -34,4 +34,7 @@ options:
 
   # Randomly pick reviewers up to this number.
   # Do not set this option if you'd like to assign all matching reviewers.
-  number_of_reviewers: 2
+  number_of_reviewers: 2
+
+# This assigns a PR to its author
+ addAssignees: author

.github/workflows/auto_assign_prs.yml

@@ -14,5 +14,5 @@ jobs:
       - name: Set the author of a PR as the assignee
       - uses: kentaro-m/auto-assign-action@v1.1.1
         with:
-          configuration-path: ".github/assign_author.yml"
+          configuration-path: ".github/auto-assignees.yml"
           repo-token: "${{ secrets.GITHUB_TOKEN }}"

.github/workflows/auto_request_review.yml

@@ -13,4 +13,4 @@ jobs:
         uses: necojackarc/auto-request-review@v0.5.1
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
-          config: .github/reviewers.yml
+          config: .github/auto-assignees.yml