[CI] Netlify production sanity checks: ignore canonical links (open-telemetry#4943)

Author: chalin

netlify.toml

@@ -1,9 +1,9 @@
 [build]
 publish = "public"
-command = "npm run seq -- build:preview diff:check"
+command = "npm run netlify-build:preview"
 
 [context.production]
-command = "npm run seq -- build:production diff:check"
+command = "npm run netlify-build:production"
 
 [[redirects]]
 from = "https://docs.opentelemetry.io/*"

package.json

@@ -1,5 +1,5 @@
 {
-  "spelling": "cSpell:ignore docsy elemetry HTMLTEST hugo loglevel netlify nowrap prebuild precheck preinstall postbuild postget refcache textlint -",
+  "spelling": "cSpell:ignore docsy elemetry htmltest hugo loglevel netlify nowrap prebuild precheck preinstall postbuild postget refcache textlint -",
   "Notes": [
     "The 'all' runs _all_ named scripts in sequence, even if one fails; and exits with failure in that case."
   ],
@@ -75,18 +75,22 @@
     "install:netlify-cli": "npm list netlify-cli || npm install netlify-cli",
     "log:check:links": "npm run check:links | tee tmp/build-log.txt",
     "make:public": "make public ls-public",
+    "netlify-build:preview": "npm run seq -- build:preview diff:check",
+    "netlify-build:production": "npm run build:production",
     "postbuild:preview": "npm run _check:links--warn",
     "postbuild:production": "npm run _check:links--warn",
     "postget:submodule": "git submodule",
+    "postnetlify-build:production": "git restore .htmltest.yml && npm run diff:check",
     "prebuild:preview": "npm run _prebuild",
     "prebuild:production": "npm run _prebuild",
     "prebuild": "npm run _prebuild",
     "precheck:links:internal": "npm run build",
     "precheck:links": "npm run build",
+    "prefix:submodules": "npm run update:submodule",
+    "prenetlify-build:production": "echo 'IgnoreTagAttribute: rel' >> .htmltest.yml",
     "prepare": "npm run seq -- get:submodule _prepare:docsy",
     "preserve:hugo": "npm run _prebuild",
     "preserve:netlify": "npm run seq -- _prebuild install:netlify-cli",
-    "prefix:submodules": "npm run update:submodule",
     "schemas:update": "npm run update:submodule content-modules/opentelemetry-specification",
     "seq": "bash -c 'for cmd in \"$@\"; do npm run $cmd || exit 1; done' - ",
     "serve:hugo": "npm run _serve:hugo -- --renderToMemory",