Update .helmignore

Signed-off-by: Yi Chen <[email protected]>

Author: ChenYi015

helm/flink-kubernetes-operator/.helmignore

@@ -1,7 +1,34 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 # Patterns to ignore when building packages.
 # This supports shell glob matching, relative path matching, and
 # negation (prefixed with !). Only one pattern per line.
-.DS_Store
+
+ci/
+
+# helm-unittest
+./tests
+.debug
+__snapshot__
+
+# helm-docs
+README.md.gotmpl
+
 # Common VCS dirs
 .git/
 .gitignore
@@ -10,14 +37,19 @@
 .hg/
 .hgignore
 .svn/
+
 # Common backup files
 *.swp
 *.bak
 *.tmp
 *.orig
 *~
+
 # Various IDEs
 .project
 .idea/
 *.tmproj
 .vscode/
+
+# MacOS
+.DS_Store