Merge pull request #9 from t-lin/silver

Silver
changing glance_configure function to the one that configures g-api and g-reg separately
fixing some minor issues in local.sh
Update lib/glance

correct typo
Update lib/glance

Correct typo
Update lib/glance

add to make a directory in configure glance
Solve the keystone and glance client problem.
improvments and bug fixes in devstack to:

1) better handle floating ip address creation
2) not adding the gateway ip address to br-ex
3) keystone endpoint update (first delete then add)
4) keystone public address for public url endpoiint
5) moving re-installing keystone and glance clients just before launching service
6) fixing a problem in swift endpoint change
7) fixing branchs of nova and quantum client in stackrc
q-dhcp using ryu driver if ryu is active
fixing error in floating address assignment scripts
adding nf2 and gpu image creation scripts
improving sample tr-edge-1 local.sh
adding tenant-add script
Fixing minor bugs in floating ip creation and association scripts
Adding a parameter to add-default script for keypair name
Fixing bug in install_client script
Add a new parameter for a keypair
fixing simple bug in assign floating ip script
improving cuda image build script
	adding downloading cuda tools
Adding run_stack.sh
this scripts runs all openstack components in a new screen.
(unlike stack.sh it doesnt drop db or reconfigure any component
Merge branch 'silver' of https://github.com/savi-dev/devstack into silver
setting cache directory in glance
fixing a minro bug in stack.sh
adding two scripts:
	1) isntall_ovs.sh
	2) recreate ovs db
some cleaning
cleaning run_stack.sh
new samples from tr-edge-1
1. Install and start janus, janusclient, whale, and whaleclient.