Misc typos in Openstack Compute (Nova)

[Shree Duth Awasthi]

Typos in few files like

1. nova/availability_zones.py +100

Return available and unavailable zones on demands -> Return available and unavailable zones on demand.

2. nova/exception.py +578

Either Network uuid %(network_uuid)s is not present -> Either network uuid %(network_uuid)s is not present

3. nova/exception.py +944

Instance Type %(instance_type_id)s has no extra specs with -> Instance type %(instance_type_id)s has no extra specs with

4. novaclient/base.py +108, 122

typicaly -> typically

And few other

[Shree Duth Awasthi (shreeduth-awasthi)]

For more details, please follow the link below.

https://review.openstack.org/#/c/60076/

Thanks.