chore: use semantic-release cross-formula standard structure

* Automated using `ssf-formula` (v0.1.0-rc.1)

test/integration/default/inspec.yml

@@ -1,12 +1,14 @@
-name: postgres
-title: Postgres Formula
-maintainer: Your Name
+name: default
+title: postgres formula
+maintainer: SaltStack Formulas
 license: Apache-2.0
 summary: Verify that the postgres formula is setup and configured correctly
 supports:
-  - os-name: debian
-  - os-name: ubuntu
-  - os-name: centos
-  - os-name: fedora
-  - os-name: opensuse
-  - os-name: suse
+  - platform-name: debian
+  - platform-name: ubuntu
+  - platform-name: centos
+  - platform-name: fedora
+  - platform-name: opensuse
+  - platform-name: suse
+  - platform-name: freebsd
+  - platform-name: amazon