Implement handle_check for CloudWatch

This allows CloudWatch resources to be checked as part of a
stack.check() operation.

Implements: blueprint stack-check
Change-Id: I974a68cc5df6baaa1f0ad594a758747773e52373
Implement handle_check for OS::Trove::Instance

This allows OS::Trove::Instance to perform a sanity check when
performing a stack.check()

Implements: blueprint stack-check
Change-Id: Idf694cbe9119c268fb27cdc090d0edff7e4a3607
Implement handle_check for OS::Swift::Container

This allows OS::Swift::Container to perform a sanity check when
performing a stack.check()

Implements: blueprint stack-check
Change-Id: I1821c8067a5cf41b2100ab500ce7cfbe6fadeb34
Implement handle_check for OS::Nova::KeyPair

This allows OS::Nova::KeyPair to perform a sanity check when performing
a stack.check()

Implements: blueprint stack-check
Change-Id: I2091df2eb6d8b4fa05fbeb07c6e92d95131b8e0b
Merge "Implement handle_check for OS::Trove::Instance"
Merge "Implement handle_check for CloudWatch"
Merge "Implement handle_check for OS::Nova::KeyPair"
Merge "Implement handle_check for OS::Swift::Container"