*: Compare integers by == or != instead of by `is` or `is not`

Same logic as in previous patch. Suggested by @jeorme in
!122 (comment 193062) .

/suggested-and-reviewed-by @jerome
/reviewed-n !122

slapos/resiliencytest/suites/erp5.py

@@ -148,7 +148,7 @@ class ERP5TestSuite(SlaprunnerTestSuite):
     else:
       result = opener_director.open(url)
 
-    if result.getcode() is not 200:
+    if result.getcode() != 200:
       raise NotHttpOkException(result.getcode())
     return result.read()
 

slapos/resiliencytest/suites/kvm.py

@@ -149,7 +149,7 @@ class KVMTestSuite(ResiliencyTestSuite):
       failure = False
       try:
         connection = urlopen('http://%s:10080/set?key=%s' % (self.ip, self.key))
-        if connection.getcode() is 200:
+        if connection.getcode() == 200:
           break
         else:
           failure = True
@@ -159,7 +159,7 @@ class KVMTestSuite(ResiliencyTestSuite):
         if failure:
           logger.info('Impossible to connect to virtual machine to set key. sleeping...')
           time.sleep(60)
-      if i is 59:
+      if i == 59:
         raise Exception('Bad return code when setting key in main instance, after trying for 60 minutes.')
 
     logger.info('Key uploaded to KVM main instance.')

slapos/resiliencytest/suites/slaprunner.py

@@ -93,7 +93,7 @@ class SlaprunnerTestSuite(ResiliencyTestSuite):
       else:
         result = self._opener_director.open(url)
 
-      if result.getcode() is not 200:
+      if result.getcode() != 200:
         raise NotHttpOkException(result.getcode())
       return result.read()
     except HTTPError: