Fix proposal operations
Fix proposal operations

The proposals bot run on a tree that is in detached state. Current git
review fails to push from this any changes.

Create instead directly a branch and work on that.

Change-Id: I487337cb1def5f5995d776c831ea61b658652677

anbangr/osci-project-config,coolsvap/project-config,dongwenjuan/project-config,noorul/os-project-config,openstack-infra/project-config,openstack-infra/project-config,Tesora/tesora-project-config,coolsvap/project-config,dongwenjuan/project-config,Tesora/tesora-project-config,noorul/os-project-config,anbangr/osci-project-config