add Asuncion as a friendly time zone

fixes CNVS-28042

test plan:
 * change a timezone on a account; Asuncion should be in the list

Change-Id: I2b6b37267e3eb2ddc753f4748b1e3a5f2c024fc6
Reviewed-on: https://gerrit.instructure.com/74550
Tested-by: Jenkins
Reviewed-by: Simon Williams <simon@instructure.com>
QA-Review: Jeremy Putnam <jeremyp@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>

config/initializers/time.rb

@@ -29,3 +29,9 @@ class ActiveSupport::TimeWithZone
     self.utc.as_json_without_utc(options)
   end
 end
+
+# Add Paraguay (Asuncion) as a friendly time zone
+ActiveSupport::TimeZone::MAPPING['Asuncion'] = 'America/Asuncion'
+ActiveSupport::TimeZone.instance_variable_set(:@zones, nil)
+ActiveSupport::TimeZone.instance_variable_set(:@zones_map, nil)
+ActiveSupport::TimeZone.instance_variable_set(:@lazy_zones_map, nil)

config/locales/en.yml

@@ -177,6 +177,7 @@ en:
     montevideo: "Montevideo"
     ulaanbaatar: "Ulaanbaatar"
     chatham_is: "Chatham Is."
+    asuncion: "Asuncion"
   support:
     array:
       or: