as of Go1.16 CertPools can't be compared

for right now we are only comparing the Subject until the issue is
resolved

Context: golang/go#46057

Author: Amin Jamali

helpers/http_client_test.go

@@ -76,7 +76,7 @@ var _ = Describe("NewHTTPSClient", func() {
 
 			caPool := httpTrans.TLSClientConfig.RootCAs
 
-			Expect(expectedPool).To(Equal(caPool))
+			Expect(expectedPool.Subjects()).To(Equal(caPool.Subjects()))
 		})
 
 		Context("when an invalid tls cert is provided", func() {