refact(e2e): Reorganize test directory

Rearranges the directory structure to align better with the enos scenarios. Tests will now be added in the `tests` directory, with a folder in the directory corresponding to an enos scenario.

.github/workflows/enos-run.yml

@@ -26,9 +26,9 @@ jobs:
       matrix:
         include:
           - filter: 'integration test:cli_ui'
-          - filter: 'e2e_credential_vault'
-          - filter: 'e2e_host_aws'
-          - filter: 'e2e_host_static'
+          - filter: 'e2e_aws'
+          - filter: 'e2e_static'
+          - filter: 'e2e_static_with_vault'
     runs-on: ubuntu-latest
     env:
       GITHUB_TOKEN: ${{ secrets.SERVICE_USER_GITHUB_TOKEN }}
@@ -123,7 +123,7 @@ jobs:
         run: |
           wget https://releases.hashicorp.com/vault/1.11.4/vault_1.11.4_linux_amd64.zip -O /tmp/test-deps/vault.zip
       - name: Install Vault for integration testing
-        if: matrix.filter == 'e2e_credential_vault'
+        if: matrix.filter == 'e2e_static_with_vault'
         run: |
           unzip /tmp/test-deps/vault.zip -d /usr/local/bin
       - name: Download Linux AMD64 Boundary bundle