Fix argumenterror for invalid semver database versions

[ci skip]

lib/open_project/database.rb

@@ -139,6 +139,9 @@ module OpenProject
 
     def self.semantic_version(version_string = self.version)
       Semantic::Version.new version_string
+    rescue ArgumentError
+      # Cut anything behind the -
+      Semantic::Version.new version_string.gsub(/\-.+$/, '')
     end
 
     def self.numeric_version

spec/lib/database_spec.rb

@@ -44,6 +44,11 @@ describe OpenProject::Database do
 
     version3 = OpenProject::Database.semantic_version '10.1.26-MariaDB-0+deb9u1'
     expect(version3.major).to eq 10
+
+    version4 = OpenProject::Database.semantic_version '5.7.23-0ubuntu0.16.04.1'
+    expect(version4.major).to eq 5
+    # Cuts the build if its invalid semver
+    expect(version4.build).to be_nil
   end
 
   it 'should be able to use the helper methods' do