enables experimental collectd ci job

- this change will enable testing of collectd-ceilometer-plugin
  in the upstream ci

Change-Id: Ie9e5fc1316e3a4a76945100d977313e8b3540d44
Closes-Bug: #1675072

devstack/gate/devstackgaterc

@@ -0,0 +1,12 @@
+#!/bin/bash -xe
+
+export DEVSTACK_GATE_LIBVIRT_TYPE=kvm
+export DEVSTACK_GATE_TEMPEST=0
+export DEVSTACK_LOCAL_CONFIG='
+COLLECTD_INSTALL=True
+COLLECTD_CEILOMETER_VERBOSE=True
+COLLECTD_CEILOMETER_ENABLED=True
+COLLECTD_GNOCCHI_ENABLED=True
+CEILOMETER_BACKEND=mysql
+GNOCCHI_USE_KEYSTONE=True
+'

devstack/gate/post_test_hook_bin.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# we need to verify that db contains collectd metrics
+# give it ~10 mins
+
+date
+echo "Stacking is finished with all endpoints/services running"
+echo "Need to restart collectd, which went into some wrong state"
+echo "or ceilometer-collectd-plugin timeouts before establishing"
+echo "connections to both gnocchi & ceilometer"
+sudo service collectd status
+sudo service collectd restart
+
+retry_count=1
+max_retry_count=20
+export PATH=/usr/sbin:$PATH
+source /opt/stack/new/devstack/openrc admin
+
+while [ "$retry_count" -le "$max_retry_count" ]; do
+    if [ $(openstack metric metric list | grep interface | wc -l) -eq 0 ] || [ $(ceilometer meter-list -l 1000 | grep interface | wc -l) -eq 0 ]; then
+         echo "Testing metric interface not yet visible in db $retry_count/$max_retry_count"
+    else
+          echo "Testing metric obtained from db"
+          exit 0
+    fi
+    let retry_count="$retry_count+1"
+    sleep 30
+done
+
+date
+echo "[ERROR] Testing metric interface not visible in db!"
+echo "Let's check collectd status:"
+sudo service collectd status
+
+exit 1
+

devstack/gate/post_test_hook_src.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+# we need to verify that db contains collectd metrics
+# give it ~10 mins
+
+date
+echo "Stacking is finished with all endpoints/services running"
+echo "Need to restart collectd, which went into some wrong state"
+echo "or ceilometer-collectd-plugin timeouts before establishing"
+echo "connections to both gnocchi & ceilometer"
+sudo service collectd status
+sudo service collectd restart
+
+retry_count=1
+max_retry_count=20
+export PATH=/usr/sbin:$PATH
+source /opt/stack/new/devstack/openrc admin
+
+while [ "$retry_count" -le "$max_retry_count" ]; do
+    if [ $(openstack metric metric list | grep interface | wc -l) -eq 0 ] || [ $(ceilometer meter-list -l 1000 | grep interface | wc -l) -eq 0 ]; then
+         echo "Testing metric interface not yet visible in db $retry_count/$max_retry_count"
+    else
+          echo "Testing metric obtained from db"
+          exit 0
+    fi
+    let retry_count="$retry_count+1"
+    sleep 30
+done
+
+date
+echo "[ERROR] Testing metric interface not visible in db!"
+echo "Let's check collectd status:"
+sudo service collectd status
+
+exit 1
+

devstack/gate/pre_test_hook_bin.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+echo collectd-ceilometer-plugin pre-test-hook executed
+

devstack/gate/pre_test_hook_src.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+echo collectd-ceilometer-plugin pre-test-hook executed
+