feat: configure edgecache for postgresql

- add fact to record system resolvers
- add resolvers feature in /etc/nginx/conf.d/resolvers.conf
- add rewrite rules for postgres/yum/repodata

hieradata/roles/infra/storage/edgecache.yaml

@@ -25,6 +25,8 @@ profiles::pki::vault::alt_names:
   - edgecache.service.consul
   - edgecache.query.consul
 
+profiles::edgecache::params::nginx_resolvers_enable: true
+profiles::edgecache::params::nginx_resolvers_ipv4only: true
 profiles::edgecache::params::nginx_listen_mode: both
 profiles::edgecache::params::nginx_cert_type: vault
 profiles::edgecache::params::nginx_aliases:
@@ -36,6 +38,9 @@ profiles::edgecache::params::directories:
   /data/edgecache/pub/almalinux: { owner: nginx, group: nginx }
   /data/edgecache/pub/debian: { owner: nginx, group: nginx }
   /data/edgecache/pub/epel: { owner: nginx, group: nginx }
+  /data/edgecache/pub/postgres: { owner: nginx, group: nginx }
+  /data/edgecache/pub/postgres/apt: { owner: nginx, group: nginx }
+  /data/edgecache/pub/postgres/yum: { owner: nginx, group: nginx }
 
 profiles::edgecache::params::mirrors:
   debian:
@@ -74,3 +79,29 @@ profiles::edgecache::params::mirrors:
     proxy_cache_valid:
       - '200 302 1440h'
       - '404 1m'
+  postgres_yum_repodata:
+    ensure: present
+    location: '~* ^/postgres/yum/.*/repodata/'
+    rewrite_rules:
+      - '^/postgres/yum/(.*)$ /pub/repos/yum/$1 break'
+    proxy: https://download.postgresql.org
+  postgres_yum_data:
+    ensure: present
+    location: /postgres/yum
+    proxy: https://download.postgresql.org/pub/repos/yum
+    proxy_cache: cache
+    proxy_cache_valid:
+      - '200 302 1440h'
+      - '404 1m'
+  postgres_apt:
+    ensure: present
+    location: /postgres/apt
+    proxy: https://download.postgresql.org/pub/repos/apt
+  postgres_apt_pool:
+    ensure: present
+    location: /postgres/apt/pool
+    proxy: https://download.postgresql.org/pub/repos/apt/pool
+    proxy_cache: cache
+    proxy_cache_valid:
+      - '200 302 1440h'
+      - '404 1m'