Avoid hardcoding version numbers in the settings

The version number can be extracted from the package's filename.

Change-Id: I0fd3cf86a3a299898027b5e6be07c6ec47e0271c

stacklight_tests/elasticsearch_kibana/plugin_settings.py

@@ -12,11 +12,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from stacklight_tests.helpers import helpers
 from stacklight_tests import settings
 
 
 name = 'elasticsearch_kibana'
-version = '0.9.0'
 role_name = ['elasticsearch_kibana']
 vip_name = 'es_vip_mgmt'
 plugin_path = settings.ELASTICSEARCH_KIBANA_PLUGIN_PATH
+version = helpers.get_plugin_version(plugin_path)

stacklight_tests/helpers/helpers.py

@@ -13,6 +13,7 @@
 #    under the License.
 
 import os
+import re
 import time
 import urllib2
 
@@ -23,12 +24,30 @@ from proboscis import asserts
 from stacklight_tests import settings
 
 
+PACKAGE_VERSION_RE = re.compile(r'(\d+\.\d+\.\d+)')
+
+
 def create_cluster(
         env, name, cluster_settings=None, mode=settings.DEPLOYMENT_MODE):
     return env.fuel_web.create_cluster(
         name=name, settings=cluster_settings, mode=mode)
 
 
+def get_plugin_version(filename):
+    """Extract the plugin version from the package filename.
+
+    :param filename: the plugin's filename.
+    :type filename: str
+    :returns: the plugin's version or None if not found
+    :rtype: str
+    """
+    m = PACKAGE_VERSION_RE.search(filename)
+    if m:
+        return m.group(1)
+    else:
+        return None
+
+
 class PluginHelper(object):
     """Class for common help functions."""
 

stacklight_tests/influxdb_grafana/plugin_settings.py

@@ -12,14 +12,15 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from stacklight_tests.helpers import helpers
 from stacklight_tests import settings
 
 
 name = 'influxdb_grafana'
-version = '0.9.0'
 role_name = ['influxdb_grafana']
 vip_name = 'influxdb'
 plugin_path = settings.INFLUXDB_GRAFANA_PLUGIN_PATH
+version = helpers.get_plugin_version(plugin_path)
 
 influxdb_db_name = "lma"
 influxdb_user = 'influxdb'

stacklight_tests/lma_collector/plugin_settings.py

@@ -12,14 +12,15 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from stacklight_tests.helpers import helpers
 from stacklight_tests import settings
 
 
 name = 'lma_collector'
-version = '0.9.0'
 role_name = []  # NOTE(rpromyshlennikov): there is no role name
 # because lma collector is installed on all nodes in cluster
 plugin_path = settings.LMA_COLLECTOR_PLUGIN_PATH
+version = helpers.get_plugin_version(plugin_path)
 
 options = {
     'environment_label/value': 'deploy_lma_toolchain',

stacklight_tests/lma_infrastructure_alerting/plugin_settings.py

@@ -12,13 +12,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from stacklight_tests.helpers import helpers
 from stacklight_tests import settings
 
 name = 'lma_infrastructure_alerting'
-version = '0.10.0'
 role_name = ['infrastructure_alerting']
 vip_name = 'infrastructure_alerting_mgmt_vip'
 plugin_path = settings.LMA_INFRA_ALERTING_PLUGIN_PATH
+version = helpers.get_plugin_version(plugin_path)
 
 nagios_user = 'nagiosadmin'
 nagios_password = 'r00tme'