Change allow_values -> allowed_values in hot_guide

Change-Id: I79b1134b04438df6165d4692cbaa74710d3b0319
Closes-bug: #1385982
Fix the get_attr docs in the hot_spec

The current description is "resource ID" and this should read
"resource name".

Change-Id: I0d37f3484e603838c2e11b8984c91c94c793d6c1
Closes-bug: #1381127
Remove oslo middleware.base module

This is deprecated and no longer used since the move to oslo.middleware

Change-Id: I43be148e551cd483ff8791191a610cb5e346daef
Partial-Bug: #1380629
Merge "Fix the get_attr docs in the hot_spec"
Merge "Change allow_values -> allowed_values in hot_guide"
Merge "Remove oslo middleware.base module"