fix: Incomplete URL substring sanitization Unvalidated Redirects and Forwards

[odaysec]

📝 Description

patched(fix) for #735

To fix the problem, we should parse the URL and check the hostname to ensure it matches the expected domain. This can be done using the urlparse function from the urllib.parse module. We will extract the hostname from the URL and check if it ends with the expected domain.

• Replace the substring check "-example.com" in result with a more robust check that parses the URL and verifies the hostname.
• Update the test to use the urlparse function to extract the hostname and check if it ends with the expected domain.

[ykim-akamai]

Thank you for updating the test case. Getting a minor assertion failure from make test-int TEST_CASE=test_list_slave_domain

AssertionError: assert (None)
E        +  where None = ParseResult(scheme='', netloc='', path='32190231741125163985209000-example.comslaveactive32190051741124805550044547exa...mple.clone-1740764427076302488-inttestsdk.orgmasteractivepathiel-test123@linode.com', params='', query='', fragment='').hostname