Add pymysql driver name to pike config

This patch fixes issue in connection string to database, when
driver wasnt added in the connection string.

Change-Id: I5d553a57b55f6056ace65c37736058656348a6f2
diff --git a/designate/files/pike/designate.conf.Debian b/designate/files/pike/designate.conf.Debian
index a89914c..8af8384 100644
--- a/designate/files/pike/designate.conf.Debian
+++ b/designate/files/pike/designate.conf.Debian
@@ -479,7 +479,7 @@
 #-----------------------
 [pool_manager_cache:sqlalchemy]
 #connection = sqlite:///$state_path/designate_pool_manager.sqlite
-connection = {{ server.database.engine }}://{{ server.database.user }}:{{ server.database.password }}@{{ server.database.host }}/{{ server.database.name.pool_manager }}{%- if server.database.get('ssl',{}).get('enabled',False) %}?ssl_ca={{ server.database.ssl.get('cacert_file', server.cacert_file) }}{% endif %}
+connection = {{ server.database.engine }}+pymysql://{{ server.database.user }}:{{ server.database.password }}@{{ server.database.host }}/{{ server.database.name.pool_manager }}{%- if server.database.get('ssl',{}).get('enabled',False) %}?ssl_ca={{ server.database.ssl.get('cacert_file', server.cacert_file) }}{% endif %}
 
 #connection_debug = 100
 #connection_trace = False
@@ -521,7 +521,7 @@
 # Database connection string - to configure options for a given implementation
 # like sqlalchemy or other see below
 #connection = sqlite:///$state_path/designate.sqlite
-connection = {{ server.database.engine }}://{{ server.database.user }}:{{ server.database.password }}@{{ server.database.host }}/{{ server.database.name.main_database }}{%- if server.database.get('ssl',{}).get('enabled',False) %}?ssl_ca={{ server.database.ssl.get('cacert_file', server.cacert_file) }}{% endif %}
+connection = {{ server.database.engine }}+pymysql://{{ server.database.user }}:{{ server.database.password }}@{{ server.database.host }}/{{ server.database.name.main_database }}{%- if server.database.get('ssl',{}).get('enabled',False) %}?ssl_ca={{ server.database.ssl.get('cacert_file', server.cacert_file) }}{% endif %}
 
 #connection_debug = 0
 #connection_trace = False