HHH-5657 exclude .git from project fileset

Author: hferentschik

distribution/src/assembly/dist.xml

@@ -172,6 +172,7 @@
  <outputDirectory>project</outputDirectory>
  <excludes>
  <exclude>**/target/**</exclude>
+ <exclude>**/.git/**</exclude>
  <exclude>**/*.ipr</exclude>
  <exclude>**/*.iml</exclude>
  <exclude>**/*.iws</exclude>