Migrate validation to Jekyll hooks (#2709)

Compared to the use of the validate.py scripts, this has the advantage of ensuring the validation is always performed.

It also gives access to enriched data, which is useful for validated generated content, such as release links. It also check links in the product description.
Note that some links had to be excluded from this check because, despite being valid, they are systematically returning an error.
A dependency to open-uri (https://github.com/ruby/open-uri) has been added to simplify the validation of HTTP links.

For this to work the priority of the ProductDataEnricher plugin has been set to normal, to allow hooks to be run before and after enrichment.

Some alternate URLs has been changed or removed due to an enforcement of the rules regarding permalinks and alternate_urls (no more dots).

Gemfile

@@ -25,3 +25,6 @@ gem "wdm", "~> 0.1.0" if Gem.win_platform?
 gem "webrick", "~> 1.8"
 
 gem 'icalendar', '~> 2.7'
+
+# Used in product-data-validator to check URLs
+gem "open-uri", "~> 0.3"

Gemfile.lock

@@ -10,6 +10,7 @@ GEM
       public_suffix (>= 2.0.2, < 6.0)
     colorator (1.1.0)
     concurrent-ruby (1.2.2)
+    date (3.3.3)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
@@ -76,6 +77,10 @@ GEM
     minitest (5.18.0)
     nokogiri (1.14.3-x86_64-linux)
       racc (~> 1.4)
+    open-uri (0.3.0)
+      stringio
+      time
+      uri
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     posix-spawn (0.3.15)
@@ -90,11 +95,15 @@ GEM
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)
+    stringio (3.0.6)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
+    time (0.2.2)
+      date
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.3.0)
+    uri (0.12.1)
     webrick (1.8.1)
 
 PLATFORMS
@@ -109,6 +118,7 @@ DEPENDENCIES
   jekyll-timeago
   jemoji
   just-the-docs
+  open-uri (~> 0.3)
   tzinfo-data
   webrick (~> 1.8)
 

_config.yml

@@ -63,6 +63,9 @@ defaults:
       path: "products"
     values:
       layout: product
+      alternate_urls: []
+      identifiers: []
+      auto: []
       releaseColumn: true
       releaseColumnLabel: 'Latest'
       releaseDateColumn: false

_plugins/product-data-enricher.rb

@@ -264,6 +264,6 @@ def render_eol_template(template, cycle)
   end
 end
 
-Jekyll::Hooks.register [:pages], :post_init do |page|
+Jekyll::Hooks.register [:pages], :post_init, priority: Jekyll::Hooks::PRIORITY_MAP[:normal] do |page|
   Jekyll::ProductDataEnricher.enrich(page) if Jekyll::ProductDataEnricher.is_product?(page)
 end