File envoy-proxy-rpmlintrc of Package envoy-proxy

# Ignore the following warnings in envoy-proxy-source package.
addFilter("envoy-proxy-source.* files-duplicate")
addFilter("envoy-proxy-source.* hidden-file-or-dir")
addFilter("envoy-proxy-source.* non-executable-script")
addFilter("envoy-proxy-source.* pem-certificate")
addFilter("envoy-proxy-source.* script-without-shebang")
addFilter("envoy-proxy-source.* suse-filelist-forbidden-fhs23")
addFilter("envoy-proxy-source.* zero-length")