repeatable zips

pom.xml

diff --git a/pom.xml b/pom.xml
index 383c57f..c79fb8b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -47,7 +47,7 @@
 
     <properties>
         <!-- keep in alphabetic order -->
-        <project.build.outputTimestamp>10</project.build.outputTimestamp>
+        <project.build.outputTimestamp>${git.commit.time}</project.build.outputTimestamp>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <project.systemvm.template.location>https://download.cloudstack.org/systemvm</project.systemvm.template.location>
@@ -75,6 +75,7 @@
         <cs.compiler-plugin.version>3.8.1</cs.compiler-plugin.version>
         <cs.dependency-plugin.version>3.9.0</cs.dependency-plugin.version>
         <cs.failsafe-plugin.version>2.22.2</cs.failsafe-plugin.version>
+        <cs.git-commit-id-plugin.version>9.0.2</cs.git-commit-id-plugin.version>
         <cs.spotbugs.version>3.1.12</cs.spotbugs.version>
         <cs.spotbugs-maven-plugin.version>3.1.12.2</cs.spotbugs-maven-plugin.version>
         <cs.jar-plugin.version>3.2.0</cs.jar-plugin.version>
@@ -853,6 +854,22 @@
         <defaultGoal>install</defaultGoal>
         <plugins>
             <plugin>
+                <groupId>io.github.git-commit-id</groupId>
+                <artifactId>git-commit-id-maven-plugin</artifactId>
+                <version>${cs.git-commit-id-plugin.version}</version>
+                <executions>
+                    <execution>
+                        <id>get-the-git-infos</id>
+                        <goals>
+                            <goal>revision</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <dateFormatTimeZone>UTC</dateFormatTimeZone>
+                </configuration>
+            </plugin>
+            <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-checkstyle-plugin</artifactId>
                 <executions>

tools/checkstyle/pom.xml

diff --git a/tools/checkstyle/pom.xml b/tools/checkstyle/pom.xml
index 62b8f08..cbd22f1 100644
--- a/tools/checkstyle/pom.xml
+++ b/tools/checkstyle/pom.xml
@@ -25,7 +25,7 @@
     <version>4.23.0.0-SNAPSHOT</version>
 
     <properties>
-        <project.build.outputTimestamp>10</project.build.outputTimestamp>
+        <project.build.outputTimestamp>${git.commit.time}</project.build.outputTimestamp>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     </properties>
@@ -33,6 +33,22 @@
     <build>
         <plugins>
             <plugin>
+                <groupId>io.github.git-commit-id</groupId>
+                <artifactId>git-commit-id-maven-plugin</artifactId>
+                <version>9.0.2</version>
+                <executions>
+                    <execution>
+                        <id>get-the-git-infos</id>
+                        <goals>
+                            <goal>revision</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <dateFormatTimeZone>UTC</dateFormatTimeZone>
+                </configuration>
+            </plugin>
+            <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-jar-plugin</artifactId>
                 <version>3.2.2</version>