Add reverse proxy configuration support for remote IP address (#14959)

* Add reverse proxy configuration support for remote IP address validation

* Trust all IP addresses in containerized environments by default

* Use single option to specify networks and proxy IP addresses. By default trust all loopback IPs

Co-authored-by: techknowlogick <techknowlogick@gitea.io>

vendor/github.com/chi-middleware/proxy/.drone.yml

@@ -0,0 +1,42 @@
+---
+kind: pipeline
+name: compliance
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+  - name: lint
+    pull: always
+    image: golang:1.14
+    commands:
+      - make fmt-check
+      - make misspell-check
+      - make lint
+
+  - name: test
+    pull: always
+    image: golang:1.14
+    commands:
+      - make test
+    depends_on:
+      - lint
+
+  - name: coverage
+    pull: always
+    image: robertstettner/drone-codecov
+    settings:
+      files:
+        - coverage.out
+    environment:
+      CODECOV_TOKEN:
+        from_secret: codecov_token
+    depends_on:
+      - test
+    when:
+      branch:
+        - master
+      event:
+        - push
+        - pull_request