update auth to allow for skip_tls

Author: MichaelClifford

src/codeflare_sdk/cluster/auth.py

@@ -61,13 +61,23 @@ def __init__(
         self.token = token
         self.server = server
 
-    def login(self):
+    def login(self, skip_tls=False):
         """
         This function is used to login to an OpenShift cluster using the user's API token and API server address.
+        Depending on the cluster, a user can choose to login in with "--insecure-skip-tls-verify` by setting `skip_tls`
+        to `True`.
         """
         token = self.token
         server = self.server
-        response = oc.invoke("login", [f"--token={token}", f"--server={server}:6443"])
+        args = [f"--token={token}", f"--server={server}:6443"]
+        if skip_tls:
+            args.append("--insecure-skip-tls-verify")
+        response = oc.invoke("login", args)
+        if (
+            "The server uses a certificate signed by unknown authority"
+            in response.err()
+        ):
+            return "Error: certificate auth failure, please set `skip_tls=True`"
         return response.out()
 
     def logout(self):