Verify logs in Splunk local in e2e tests

[ningziwen]

Draft code which can get a long xml but without the log sent by e2e tests. Need to investigate how to search the results. Opened the issue in splunk repo: splunk/docker-splunk#625

func validateTestLogsInSplunk(url string, token string, testLog string) {
	// Use REST API to retrieve the logs. https://docs.splunk.com/Documentation/Splunk/9.1.1/RESTREF/RESTsearch#search.2Fjobs
	tr := &http.Transport{
		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
	}
	client := &http.Client{Transport: tr}
	searchQuery := "search *" // Get the latest of all the log events.
	req, err := http.NewRequest("POST", fmt.Sprintf("%s/services/search/jobs", url), bytes.NewBufferString(searchQuery))
	gomega.Expect(err).ShouldNot(gomega.HaveOccurred())
	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
	req.Header.Set("Authorization", fmt.Sprintf("Splunk %s", token)) // https://docs.splunk.com/Documentation/Splunk/9.1.1/Security/UseAuthTokens
	resp, err := client.Do(req)
	gomega.Expect(err).ShouldNot(gomega.HaveOccurred())
	defer resp.Body.Close()
	body, err := io.ReadAll(resp.Body)
	gomega.Expect(err).ShouldNot(gomega.HaveOccurred())
	fmt.Println(string(body))
}