[Pingability.com] Update and reactivate ruleset (#10238)

src/chrome/content/rules/Pingability.com.xml

@@ -1,20 +1,20 @@
 <!--
-Disabled by https-everywhere-checker because:
-Fetch error: http://pingability.com/ => https://pingability.com/: (60, 'SSL certificate problem: unable to get local issuer certificate')
-Fetch error: http://www.pingability.com/ => https://pingability.com/: (60, 'SSL certificate problem: unable to get local issuer certificate')
-	www: cert only matches ^pingability.com
+	Invalid certificate:
+		www.pingability.com
 
 -->
-<ruleset name="Pingability.com" default_off='failed ruleset test'>
+<ruleset name="Pingability.com">
 
 	<target host="pingability.com" />
 	<target host="www.pingability.com" />
+	<target host="matrix.pingability.com" />
 
+	<securecookie host=".+" name=".+" />
 
-	<securecookie host="^(?:www\.)?pingability\.com$" name=".+" />
-
-
-	<rule from="^http://(?:www\.)?pingability\.com/"
+	<rule from="^http://www\.pingability\.com/"
 		to="https://pingability.com/" />
 
+	<rule from="^http:"
+		to="https:" />
+
 </ruleset>