Bug 1563330 - Let login autocomplete for subdomains ride trains for release. r=MattN

Needs a rs to enable the feature for 71.

Try: https://treeherder.mozilla.org/#/jobs?repo=try&searchStr=mochitest&revision=811f92d684564767fdfcfabf9408905e41ec1de0
I guess all the autocomplete tests are skipped for android anyhow, but I also ran: https://treeherder.mozilla.org/#/jobs?repo=try&searchStr=mochitest&revision=f7d3c7dbb98654e8345030ca3058f44a9c31b510

Differential Revision: https://phabricator.services.mozilla.com/D49046

--HG--
extra : moz-landing-system : lando

browser/app/profile/firefox.js

@@ -1794,11 +1794,8 @@ pref("signon.management.page.enabled", true);
 pref("signon.management.page.breach-alerts.enabled", true);
 pref("signon.management.page.sort", "name");
 pref("signon.management.overrideURI", "about:logins?filter=%DOMAIN%");
-#ifdef NIGHTLY_BUILD
-  // Bug 1563330 tracks shipping this by default.
-  pref("signon.showAutoCompleteOrigins", true);
-  pref("signon.includeOtherSubdomainsInLookup", true);
-#endif
+pref("signon.showAutoCompleteOrigins", true);
+pref("signon.includeOtherSubdomainsInLookup", true);
 // The utm_creative value is appended within the code (specific to the location on
 // where it is clicked). Be sure that if these two prefs are updated, that
 // the utm_creative param be last.