Add parameters to ApplyRateLimiting flow callout (#106)

* Add parameters to ApplyRateLimiting flow callout

A 'Parameters' section was added to the 'FlowCallout.ApplyRateLimiting' in apiproxy/policies. This includes a parameter named 'verifyApiKeyPolicyName' with the value 'VerifyApiKey.FromHeader'. This will ensure that the API key is verified from the header, improving the security measure of the process.

* Changed apikey case

* Update display name in FlowCallout.ApplyRateLimiting

The display name of the FlowCallout "ApplyRateLimiting" in the "live" proxy's policy was updated. The change made was specifically to improve readability without affecting functionality.

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Co-authored-by: igba.ujege <igba.ujege@bjss.com>

Author: igba1980

proxies/live/apiproxy/policies/FlowCallout.ApplyRateLimiting.xml

@@ -1,5 +1,7 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <FlowCallout async="false" continueOnError="false" enabled="true" name="FlowCallout.ApplyRateLimiting">
-    <DisplayName>FlowCallout.ApplyRateLimiting</DisplayName>
+    <DisplayName>Apply Rate Limiting</DisplayName>
     <SharedFlowBundle>ApplyRateLimiting</SharedFlowBundle>
+    <Parameters>
+      <Parameter name="verifyApiKeyPolicyName">VerifyAPIKey.FromHeader</Parameter>
+    </Parameters>
 </FlowCallout>