Add more roles to designate formulas

Provide roles:
pool_manager
worker
agent

The idea was proposed by Aleš Komárek:
https://gerrit.mcp.mirantis.net/6723

Make adjustments to designate.conf.Debian to be able
to take into account pool_manager changes in
reclass model.

Provide default roles description in pillars for tests.

Change-Id: I214d8db39365648b5ef9348b52edd839327ca197
Related-PROD: https://mirantis.jira.com/browse/PROD-14396
diff --git a/tests/pillar/designate_liberty.sls b/tests/pillar/designate_liberty.sls
index be528eb..bef5e4a 100644
--- a/tests/pillar/designate_liberty.sls
+++ b/tests/pillar/designate_liberty.sls
@@ -1,4 +1,6 @@
 designate:
+  pool_manager:
+    enabled: true
   server:
     enabled: true
     region: RegionOne
@@ -25,4 +27,4 @@
         uuid: f26e0b32-736f-4f0a-831b-039a415c481e
         options: 'port: 53, host: 127.0.0.1'
         masters: 127.0.0.1:5354
-        type:  bind9
\ No newline at end of file
+        type:  bind9
diff --git a/tests/pillar/designate_mitaka.sls b/tests/pillar/designate_mitaka.sls
index 8543c76..e0e3f67 100644
--- a/tests/pillar/designate_mitaka.sls
+++ b/tests/pillar/designate_mitaka.sls
@@ -1,4 +1,6 @@
 designate:
+  pool_manager:
+    enabled: true
   server:
     enabled: true
     region: RegionOne
diff --git a/tests/pillar/designate_ocata.sls b/tests/pillar/designate_ocata.sls
index 630cccc..adbd8ad 100644
--- a/tests/pillar/designate_ocata.sls
+++ b/tests/pillar/designate_ocata.sls
@@ -65,6 +65,8 @@
         also_notifies:
           - host: 127.0.3.1
             port: 53
+  worker:
+    enabled: true
 mysql:
   client:
     enabled: true