Update persistence tutorial to use keep-last instead of keep-all (#696)

Also updated last-value-cache module to use snippet qos profiles.

Author: alexcamposruiz

tutorials/data_persistence/c++11/USER_QOS_PROFILES.xml

@@ -14,9 +14,21 @@
         <qos_profile name="Persistence" is_default_qos="true">
             <base_name>
                 <element>BuiltinQosSnippetLib::QosPolicy.Durability.Persistent</element>
-                <element>BuiltinQosSnippetLib::QosPolicy.History.KeepAll</element>
                 <element>BuiltinQosSnippetLib::QosPolicy.Reliability.Reliable</element>
             </base_name>
+
+            <datawriter_qos>
+                <history>
+                    <kind>KEEP_LAST_HISTORY_QOS</kind>
+                    <depth>10</depth>
+                </history>
+            </datawriter_qos>
+            <datareader_qos>
+                <history>
+                    <kind>KEEP_LAST_HISTORY_QOS</kind>
+                    <depth>10</depth>
+                </history>
+            </datareader_qos>
         </qos_profile>
     </qos_library>
 </dds>

tutorials/data_persistence/py/USER_QOS_PROFILES.xml

@@ -14,9 +14,21 @@
         <qos_profile name="Persistence" is_default_qos="true">
             <base_name>
                 <element>BuiltinQosSnippetLib::QosPolicy.Durability.Persistent</element>
-                <element>BuiltinQosSnippetLib::QosPolicy.History.KeepAll</element>
                 <element>BuiltinQosSnippetLib::QosPolicy.Reliability.Reliable</element>
             </base_name>
+
+            <datawriter_qos>
+                <history>
+                    <kind>KEEP_LAST_HISTORY_QOS</kind>
+                    <depth>10</depth>
+                </history>
+            </datawriter_qos>
+            <datareader_qos>
+                <history>
+                    <kind>KEEP_LAST_HISTORY_QOS</kind>
+                    <depth>10</depth>
+                </history>
+            </datareader_qos>
         </qos_profile>
     </qos_library>
 </dds>

tutorials/last_value_cache/c++11/USER_QOS_PROFILES.xml

@@ -13,22 +13,26 @@
     <qos_library name="MyLibrary">
         <qos_profile name="MyProfile" is_default_qos="true">
             <base_name>
-                <element>BuiltinQosLib::Generic.KeepLastReliable.TransientLocal</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.Durability.TransientLocal</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.Reliability.Reliable</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.History.KeepLast_1</element>
             </base_name>
         </qos_profile>
         <qos_profile name="Last10Cache">
             <base_name>
-                <element>BuiltinQosLib::Generic.KeepLastReliable.TransientLocal</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.Durability.TransientLocal</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.Reliability.Reliable</element>
             </base_name>
-            <!-- Up to this point we will only keep the last sample
-            Lets update the history to keep the last 10 samples -->
+
             <datawriter_qos>
                 <history>
+                    <kind>KEEP_LAST_HISTORY_QOS</kind>
                     <depth>10</depth>
                 </history>
             </datawriter_qos>
             <datareader_qos>
                 <history>
+                    <kind>KEEP_LAST_HISTORY_QOS</kind>
                     <depth>10</depth>
                 </history>
             </datareader_qos>

tutorials/last_value_cache/py/USER_QOS_PROFILES.xml

@@ -13,22 +13,26 @@
     <qos_library name="MyLibrary">
         <qos_profile name="MyProfile" is_default_qos="true">
             <base_name>
-                <element>BuiltinQosLib::Generic.KeepLastReliable.TransientLocal</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.Durability.TransientLocal</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.Reliability.Reliable</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.History.KeepLast_1</element>
             </base_name>
         </qos_profile>
         <qos_profile name="Last10Cache">
             <base_name>
-                <element>BuiltinQosLib::Generic.KeepLastReliable.TransientLocal</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.Durability.TransientLocal</element>
+                <element>BuiltinQosSnippetLib::QosPolicy.Reliability.Reliable</element>
             </base_name>
-            <!-- Up to this point we will only keep the last sample
-            Lets update the history to keep the last 10 samples -->
+
             <datawriter_qos>
                 <history>
+                    <kind>KEEP_LAST_HISTORY_QOS</kind>
                     <depth>10</depth>
                 </history>
             </datawriter_qos>
             <datareader_qos>
                 <history>
+                    <kind>KEEP_LAST_HISTORY_QOS</kind>
                     <depth>10</depth>
                 </history>
             </datareader_qos>