Ansible gce module just hangs

ansible-playbook -vvvv --private-key=~/.ssh/google_compute_engine -i ansible_hosts site.yml

PLAY [Create Compute Engine instances] ****************************************

TASK: [Bring up the instances in the first zone] ******************************
<127.0.0.1> ESTABLISH CONNECTION FOR USER: shubhendu
<127.0.0.1> REMOTE_MODULE gce image=debian-7 project_id=*****-007 machine_type=n1-standard-1 pem_file=docstore-pkey.pem instance_names=myinstance1,myinstance3 service_account_email= zone=us-central1-a
<127.0.0.1> EXEC ssh -C -tt -vvv -o ControlMaster=auto -o ControlPersist=60s -o ControlPath=“/home/shubhendu/.ansible/cp/ansible-ssh-%h-%p-%r” -o StrictHostKeyChecking=no -o IdentityFile=“/home/shubhendu/.ssh/google_compute_engine” -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=10 127.0.0.1 /bin/sh -c ‘mkdir -p $HOME/.ansible/tmp/ansible-tmp-1450360918.21-219379782871306 && chmod a+rx $HOME/.ansible/tmp/ansible-tmp-1450360918.21-219379782871306 && echo $HOME/.ansible/tmp/ansible-tmp-1450360918.21-219379782871306’
<127.0.0.1> PUT /tmp/tmpODInqp TO /home/shubhendu/.ansible/tmp/ansible-tmp-1450360918.21-219379782871306/gce
<127.0.0.1> EXEC ssh -C -tt -vvv -o ControlMaster=auto -o ControlPersist=60s -o ControlPath=“/home/shubhendu/.ansible/cp/ansible-ssh-%h-%p-%r” -o StrictHostKeyChecking=no -o IdentityFile=“/home/shubhendu/.ssh/google_compute_engine” -o KbdInteractiveAuthentication=no -o PreferredAuthentications=gssapi-with-mic,gssapi-keyex,hostbased,publickey -o PasswordAuthentication=no -o ConnectTimeout=10 127.0.0.1 /bin/sh -c ‘LANG=C LC_CTYPE=C /usr/bin/python /home/shubhendu/.ansible/tmp/ansible-tmp-1450360918.21-219379782871306/gce; rm -rf /home/shubhendu/.ansible/tmp/ansible-tmp-1450360918.21-219379782871306/ >/dev/null 2>&1’

Ansible just hangs there without creating a new instance I am using the ansible role form here
https://github.com/GoogleCloudPlatform/compute-video-demo-ansible

Ansible version = ansible 1.9.4
Libcloud version = apache-libcloud 0.20.0

Can some one tell what could be the problem?