elsaticsearch-master Instance getting failed when deploying graylog bosh-release

Hello Team, I am encountering an error when deploying Graylog on our opensource CF platform (Azure IAAS). I am trying to deploy Graylog with Bosh-release.
Graylog project -- https://github.com/govau/graylog-boshrelease
I have deployed latest release graylog v0.2.0
Used below stemcell
stemcells:
- alias: default
os: ubuntu-xenial
version: 621.123
After bosh deploy, The "elasticsearch-master" getting failed with below errors.
It's been 3 days I got stuck with this issue. Can someone please assist me on this. Many thanks!!

/var/vcap/sys/log/elsaticsearch/elasticsearch.stderr.log

**Exception in thread "main" SettingsException[Failed to open stream for url [/var/vcap/packages/elasticsearch/config/elasticsearch.yml]]; nested: AccessDeniedException[/var/vcap/packages/elasticsearch/config/elasticsearch.yml];
Likely root cause: java.nio.file.AccessDeniedException: /var/vcap/packages/elasticsearch/config/elasticsearch.yml
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:84)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
at java.nio.file.Files.newByteChannel(Files.java:361)
at java.nio.file.Files.newByteChannel(Files.java:407)
at java.nio.file.spi.FileSystemProvider.newInputStream(FileSystemProvider.java:384)
at java.nio.file.Files.newInputStream(Files.java:152)
at org.elasticsearch.common.settings.Settings$Builder.loadFromPath(Settings.java:1067)
at org.elasticsearch.node.internal.InternalSettingsPreparer.prepareEnvironment(InternalSettingsPreparer.java:88)
at org.elasticsearch.common.cli.CliTool.(CliTool.java:107)
at org.elasticsearch.common.cli.CliTool.(CliTool.java:100)
at org.elasticsearch.bootstrap.BootstrapCLIParser.(BootstrapCLIParser.java:48)
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:242)
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:45)
Refer to the log for complete error details.**


Start with the BOSH deployment configuration for the elasticsearch-master instance and the reported /var/vcap/sys/log/elsaticsearch/elasticsearch.stderr.log output. Check how the deployment creates or accesses /var/vcap/packages/elasticsearch/config/elasticsearch.yml under Ubuntu Xenial stemcell 621.123. Done means the elasticsearch-master instance deploys successfully without the reported AccessDeniedException.

Written by the indexing model from the issue text.