[HTTP][CORS] Exact value origin match fails

[chamil321]

Description:
Test the following issue from slack:

My client is an angular implementation deployed on Nginx in domainA. My ballerina services run in domainB. In fact, 
the nginx server is deployed on an IP address in domainB and the DNS from domainA has a record 
pointing to that IP address. To fix the CORS issues I used to following configuration for my service: 
@http: ServiceConfig{ basePath: "...", cors: {allowOrigins: [""], allowCredentials: false, allowHeaders: 
["*"], maxAge: 84900}}While the wildcard option seems to be working when I check the site from 
domainA my services are throwing a CORS error Cross-origin request blocked. When I try to set an 
exact match for the origins (e.g., https://domainA) I get an error everywhere. Any idea how I can fix it?


Cross-origin request blocked is the error I get in the domain or when I try the exact match with the 
URL

like I said earlier using allowOrigins: ["*"] only works outside domainA. Inside domainA I don't get the 
http response to my services

that's the one I get while checking from domainA