pylama rightly complaints against two expressions in asa.py

[mcepl]

To avoid those this patch needs to be applied:

---
 napalm_asa/asa.py |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/napalm_asa/asa.py
+++ b/napalm_asa/asa.py
@@ -62,7 +62,7 @@ class RespFetcherHttps:
         try:
             token_request = self.session.post(full_url, auth=(self.username, self.password),
                                               data="", timeout=self.timeout, verify=False)
-            if token_request.status_code is 204 and 'X-Auth-Token' in token_request.headers.keys():
+            if token_request.status_code == 204 and 'X-Auth-Token' in token_request.headers.keys():
                 self.token = token_request.headers['X-Auth-Token']
                 self.session.headers.update({'X-Auth-Token': token_request.headers['X-Auth-Token']})
                 return (True, None)
@@ -78,7 +78,7 @@ class RespFetcherHttps:
             token_delete_request = self.session.delete(full_url,
                                                        auth=(self.username, self.password),
                                                        timeout=self.timeout, verify=False)
-            if token_delete_request.status_code is 204:
+            if token_delete_request.status_code == 204:
                 self.session.headers.pop('X-Auth-Token', None)
                 return (True, None)
             else: