Allow gzip exported bigquery CSV with -z flag
Allow gzip exported bigquery CSV with -z flag

JavaRabbit/CS496_capstone,sharbison3/python-docs-samples,GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples,canglade/NLP,hashems/Mobile-Cloud-Development-Projects,hashems/Mobile-Cloud-Development-Projects,canglade/NLP,BrandonY/python-docs-samples,BrandonY/python-docs-samples,hashems/Mobile-Cloud-Development-Projects,marcomaccio/python-docs-samples,GoogleCloudPlatform/python-docs-samples,JavaRabbit/CS496_capstone,marcomaccio/python-docs-samples,BrandonY/python-docs-samples,hashems/Mobile-Cloud-Development-Projects,sharbison3/python-docs-samples,JavaRabbit/CS496_capstone,canglade/NLP,canglade/NLP,marcomaccio/python-docs-samples,marcomaccio/python-docs-samples,BrandonY/python-docs-samples,JavaRabbit/CS496_capstone,sharbison3/python-docs-samples,sharbison3/python-docs-samples,GoogleCloudPlatform/python-docs-samples