nginx-mainline, nginx-stable: add brotli dynamic module

Add ngx_brotli as two dynamic module subpackages
(nginx-{mainline,stable}-mod-http_brotli_filter and -static),
pinned to google/ngx_brotli master at a71f9312.

brotli-dev was already present in the build environment
(residue from prior attempt #8771) and now has a consumer.
The ngx_brotli config script picks up system libbrotli via
pkg-config, so no submodule initialization is required.

Refs: #8771 (stale-closed prior attempt)

Author: akirk-gitguardian

nginx-mainline.yaml

@@ -58,6 +58,8 @@ var-transforms:
 data:
   - name: modules
     items:
+      http_brotli_filter: "10"
+      http_brotli_static: "10"
       http_geoip: "10"
       http_image_filter: "10"
       http_perl: "10"
@@ -87,6 +89,13 @@ pipeline:
       expected-commit: 5eaf45f11e85459b52c18f876e69320df420ae29
       destination: nginx-mainline
 
+  - uses: git-checkout
+    with:
+      repository: https://github.com/google/ngx_brotli.git
+      branch: master
+      expected-commit: a71f9312c2deb28875acc7bacfdd5695a111aa53
+      destination: ngx_brotli
+
   - name: configure
     working-directory: nginx-mainline
     runs: |
@@ -139,7 +148,8 @@ pipeline:
           --with-stream_ssl_module \
           --with-stream_realip_module \
           --with-stream_geoip_module=dynamic \
-          --with-stream_ssl_preread_module
+          --with-stream_ssl_preread_module \
+          --add-dynamic-module=../ngx_brotli
 
   - working-directory: nginx-mainline
     runs: |

nginx-stable.yaml

@@ -54,6 +54,8 @@ var-transforms:
 data:
   - name: modules
     items:
+      http_brotli_filter: "10"
+      http_brotli_static: "10"
       http_geoip: "10"
       http_image_filter: "10"
       http_perl: "10"
@@ -84,6 +86,13 @@ pipeline:
       expected-commit: 9b958b000776c88036cd800c66e7e4ad39e6fd41
       destination: nginx-stable
 
+  - uses: git-checkout
+    with:
+      repository: https://github.com/google/ngx_brotli.git
+      branch: master
+      expected-commit: a71f9312c2deb28875acc7bacfdd5695a111aa53
+      destination: ngx_brotli
+
   - name: configure
     working-directory: nginx-stable
     runs: |
@@ -138,7 +147,8 @@ pipeline:
           --with-stream_ssl_module \
           --with-stream_realip_module \
           --with-stream_geoip_module=dynamic \
-          --with-stream_ssl_preread_module
+          --with-stream_ssl_preread_module \
+          --add-dynamic-module=../ngx_brotli
 
   - working-directory: nginx-stable
     runs: |