Fix issue with periodic fail of Heat test 'test_autoscaling'

-Increased alarms period in templates
-Increased number of RAM in test flavor

Closes-Bug: #1361629

Change-Id: I51a1480c5dd5350098124f4f06fc28f4b1e02333

fuel_health/etc/heat_autoscale_nova.yaml

@@ -45,7 +45,7 @@ resources:
       MetricName: CPUUtilization
       Namespace: system/linux
       Statistic: Average
-      Period: '20'
+      Period: '60'
       EvaluationPeriods: '1'
       Threshold: '50'
       AlarmActions:
@@ -61,7 +61,7 @@ resources:
       MetricName: CPUUtilization
       Namespace: system/linux
       Statistic: Average
-      Period: '20'
+      Period: '60'
       EvaluationPeriods: '1'
       Threshold: '30'
       AlarmActions:

fuel_health/etc/heat_autoscaling_template.yaml

@@ -47,7 +47,7 @@ resources:
       MetricName: CPUUtilization
       Namespace: system/linux
       Statistic: Average
-      Period: '20'
+      Period: '60'
       EvaluationPeriods: '1'
       Threshold: '50'
       AlarmActions:
@@ -63,7 +63,7 @@ resources:
       MetricName: CPUUtilization
       Namespace: system/linux
       Statistic: Average
-      Period: '20'
+      Period: '60'
       EvaluationPeriods: '1'
       Threshold: '30'
       AlarmActions:

fuel_health/tests/platform_tests/test_heat.py

@@ -234,7 +234,7 @@ class HeatSmokeTests(heatmanager.HeatBaseTest):
         flavor = self.verify(10, self._create_flavors, 2,
                              "Flavor can not be created.",
                              "flavor creation",
-                             self.compute_client, 382, 12)
+                             self.compute_client, 512, 12)
 
         keypair = self.verify(10, self._create_keypair, 3,
                               'Keypair can not be created.',