Fixed issue with ports checks

OSTF tests don't have direct access to VMs ports,
we need to check availability of these ports from
OpenStack controller nodes instead of Fuel master node.

Change-Id: I90c4980cefb8fc650d1c2d2f4f92e98815bda98f
Closes-Bug: #1495699

fuel_health/muranomanager.py

@@ -16,7 +16,6 @@
 import contextlib
 import logging
 import os
-import socket
 import time
 import traceback
 import zipfile
@@ -359,16 +358,16 @@ class MuranoTest(fuel_health.nmanager.PlatformServicesBaseClass):
         return 'OK'
 
     def check_port_access(self, ip, port):
-        result = 1
+        output = ''
         start_time = time.time()
         while time.time() - start_time < 600:
-            sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-            result = sock.connect_ex((str(ip), port))
-            sock.close()
-            if result == 0:
+            # Check VM port availability from controller node:
+            output, err = self._run_ssh_cmd("nc -z {0} {1}; echo $?"
+                                            .format(ip, port))
+            if '0' in output:
                 break
             time.sleep(5)
-        self.assertEqual(0, result, '%s port is closed on instance' % port)
+        self.assertIn('0', output, '%s port is closed on instance' % port)
 
     def port_status_check(self, environment, configurations):
         """Function which gives opportunity to check multiple instances
@@ -467,8 +466,8 @@ class MuranoTest(fuel_health.nmanager.PlatformServicesBaseClass):
             ip = self.get_ip_by_instance_name(environment, inst_name)
         else:
             ip = environment.services[0]['instance']['floatingIpAddress']
-        resp = requests.get('http://{0}/{1}'.format(ip, path), verify=False)
-        if resp.status_code == 200:
-            pass
-        else:
+        uri = 'http://{0}/{1}'.format(ip, path)
+        cmd = "curl --connect-timeout 1 --head {0}".format(uri)
+        stdout, stderr = self._run_ssh_cmd(cmd)
+        if '404' in stdout:
             self.fail("Service path unavailable")