Add astroid to test-req and fixed perms to gate_hook.sh

Currently freezer-api build are broken as pylint execution
failes is atroid is not availble in test-requirements.

Exec permissions of the file devstack/gate_hook.sh are
added as the dsvm gate job was failing.

Change-Id: I837e3fe973d72c792cb34711cef9f6507a004d49

devstack/files/apache-freezer-api.template

@@ -1,8 +1,7 @@
 Listen %SERVICE_HOST%:%FREEZER_API_PORT%
-Listen 127.0.0.1:%FREEZER_API_PORT%
 
 <VirtualHost *:%FREEZER_API_PORT%>
-    WSGIDaemonProcess freezer-api processes=1 threads=1 user=%USER%
+    WSGIDaemonProcess freezer-api processes=2 threads=2 user=%USER%
     WSGIProcessGroup freezer-api
     WSGIApplicationGroup freezer-api
     WSGIScriptAlias / %FREEZER_API_DIR%/freezer_api/cmd/api.py
@@ -19,4 +18,4 @@ Listen 127.0.0.1:%FREEZER_API_PORT%
       allow from all
       LimitRequestBody 102400
     </Directory>
-</VirtualHost>
+</VirtualHost>

devstack/gate_hook.sh

@@ -15,7 +15,7 @@
 
 set -ex
 
-# Install barbican devstack integration
+# Install freezer devstack integration
 export DEVSTACK_LOCAL_CONFIG="enable_plugin freezer-api https://git.openstack.org/openstack/freezer-api"
 
 $BASE/new/devstack-gate/devstack-vm-gate.sh

test-requirements.txt

@@ -1,3 +1,4 @@
+astroid<1.4.0 # breaks pylint 1.4.4
 coverage
 flake8>=2.2.4,<=2.4.1
 mock>=1.2