Add base support for SSL for Openstack services

- Update "address" function to use "tls" config option and set scheme to
 'https'. Also we check, that service is in list of services, which support
  TLS.
- Updated function for generation Environment, which will be used by
  openstackclient. Now 'https' scheme will be used if 'tls' is enabled.
  Also was added new variable for storing path for file with CA
  certificate.
- Implementation of httpGet was changed to support 'https' endpoints.
  Now requests.get method uses 'https' scheme with verify=False, if 'tls'
  is enabled.

Change-Id: I88bc21571589dcd4c31bb5ce5015a75676ed2d85

fuel_ccp_entrypoint/start_script.py

@@ -180,8 +180,10 @@ def openstackclient_preexec_fn():
         os.environ["OS_PASSWORD"] = VARIABLES['openstack']['user_password']
         os.environ["OS_USERNAME"] = VARIABLES['openstack']['user_name']
         os.environ["OS_PROJECT_NAME"] = VARIABLES['openstack']['project_name']
-        os.environ["OS_AUTH_URL"] = 'http://%s/v3' % address(
-            'keystone', VARIABLES['keystone']['admin_port'])
+        if VARIABLES['security']['tls']['create_certificates']:
+            os.environ["OS_CACERT"] = CACERT
+        os.environ["OS_AUTH_URL"] = '%s/v3' % address(
+            'keystone', VARIABLES['keystone']['admin_port'], with_scheme=True)
     return result
 
 
@@ -217,7 +219,12 @@ def get_ingress_host(ingress_name):
 
 def address(service, port=None, external=False, with_scheme=False):
     addr = None
-    scheme = 'http'
+    enable_tls = VARIABLES.get(service, {}).get('tls', {}).get('enabled')
+
+    if enable_tls:
+        scheme = 'https'
+    else:
+        scheme = 'http'
     if external:
         if not port:
             raise RuntimeError('Port config is required for external address')
@@ -551,11 +558,19 @@ def run_probe(probe):
     if probe["type"] == "exec":
         run_cmd(probe["command"])
     elif probe["type"] == "httpGet":
-        url = "http://{}:{}{}".format(
+        scheme = probe.get('scheme', 'http')
+        if scheme == 'https':
+            # disable SSL check for probe request
+            verify = False
+        else:
+            verify = True
+
+        url = "{}://{}:{}{}".format(
+            scheme,
             VARIABLES["network_topology"]["private"]["address"],
             probe["port"],
             probe.get("path", "/"))
-        resp = requests.get(url)
+        resp = requests.get(url, verify=verify)
         resp.raise_for_status()