Add cURL examples for Cloud Databases

author: diane fleming
Merge branch 'curl-database' of github.com:dian4554/developer.rackspace.com into dian4554-curl-database

Conflicts:
	src/docs/cloud-databases/getting-started/samples/authentication.rst
	src/docs/databases/quickstart.rst
	src/docs/databases/samples/check_root_status.rst
	src/docs/databases/samples/create_backup.rst
	src/docs/databases/samples/create_db.rst
	src/docs/databases/samples/create_instance.rst
	src/docs/databases/samples/create_user.rst
	src/docs/databases/samples/enable_root_user.rst
	src/docs/databases/samples/get_flavor.rst
	src/docs/databases/samples/list_flavors.rst
	src/docs/databases/samples/resize_instance.rst
	src/docs/databases/samples/restart_instance.rst
	src/docs/databases/samples/restore_backup.rst
	src/docs/files/samples/auth_client.rst
	src/docs/images/samples/authentication.rst
	src/docs/images/samples/update_image_member.rst
Not sure what diffs were here.
Use soft-wrapping for prose.
Double quote-mark!

.rst with syntax highlighting makes this extra obvious. :point_up:
Reword the Cloud Database curl samples.

Following our new conventions.
Remove the old-style samples.
Toss the tenant!
Toss the comments around checking root status.
These comments are redundant to the surrounding copy.
Merge pull request #367 from rackerlabs/curl-database

sh samples for cloud databases