Added update scripts for 5.1.0M1

Signed-off-by: Matthias Koller <m.koller@peak-solution.de>
diff --git a/build.gradle b/build.gradle
index 8e8e113..e4b8154 100644
--- a/build.gradle
+++ b/build.gradle
@@ -141,6 +141,11 @@
 			from "${project.projectDir}/org.eclipse.mdm.preferences/build/generated-schema/"
 			into "${project.projectDir}/build/tmp/openmdm_application/schema/org.eclipse.mdm.preferences"
 		}
+		
+		copy {
+			from "${project.projectDir}/org.eclipse.mdm.preferences/src/main/sql/"
+			into "${project.projectDir}/build/tmp/openmdm_application/schema/update"
+		}
 	}
 }
 
diff --git a/org.eclipse.mdm.preferences/src/main/sql/derby/5.1.0M1_update.sql b/org.eclipse.mdm.preferences/src/main/sql/derby/5.1.0M1_update.sql
new file mode 100644
index 0000000..2af00f9
--- /dev/null
+++ b/org.eclipse.mdm.preferences/src/main/sql/derby/5.1.0M1_update.sql
@@ -0,0 +1 @@
+CREATE TABLE system_process (ID BIGINT GENERATED BY DEFAULT AS IDENTITY NOT NULL, process_id VARCHAR(255), process_key VARCHAR(255), last_locked BIGINT, PRIMARY KEY (ID));

diff --git a/org.eclipse.mdm.preferences/src/main/sql/postgres/5.1.0M1_update.sql b/org.eclipse.mdm.preferences/src/main/sql/postgres/5.1.0M1_update.sql
new file mode 100644
index 0000000..5b71051
--- /dev/null
+++ b/org.eclipse.mdm.preferences/src/main/sql/postgres/5.1.0M1_update.sql
@@ -0,0 +1 @@
+CREATE TABLE system_process (ID  SERIAL NOT NULL, process_id VARCHAR(255), process_key VARCHAR(255), last_locked BIGINT, PRIMARY KEY (ID));

diff --git a/release_notes.md b/release_notes.md
index 56fa3f0..f130a45 100644
--- a/release_notes.md
+++ b/release_notes.md
@@ -13,6 +13,18 @@
 * XY-Chartviewer to view measurement data
 * Introduce user roles on the webclient
 
+### Breaking changes ###
+
+#### Changes to MDMRealm ####
+Up to version 5.1.0 all Users had to be assigned the group `MDM` to use openMDM.
+Since 5.2.0M1 users need one of the following groups: `Admin`, `DescriptiveDataAuthor`, `Guest`.
+See `org.eclipse.mdm.nuclues/readme.md#Configure LoginModule` for more information.
+
+#### Database schema changes ####
+In this release openMDM 5 database schema was extended. 
+If you have an existing installation make sure to apply the provided update script to your database.
+The script can be found in `schema/update/{DATABASE}/5.2.0M1_update.sql`.
+
 
 ### API changes ###
 REST-API:
@@ -51,6 +63,7 @@
 * [552401](https://bugs.eclipse.org/bugs/show_bug.cgi?id=552401) - Model mapping in atfxadapter with ExtSystem
 * [552402](https://bugs.eclipse.org/bugs/show_bug.cgi?id=552402) - Simple XY-Chartviewer
 * [552403](https://bugs.eclipse.org/bugs/show_bug.cgi?id=552403) - Introduce user roles on the webclient
+* [562384](https://bugs.eclipse.org/bugs/show_bug.cgi?id=562384) - Freetextindexer should only index once in clustered deployments
 
 ## Version 5.1.0 ##