Description of problem:
It is possible to delete CV in used CCV with hammer... without any warning.


How reproducible:
Always


Steps to Reproduce:

- create content view 
  # hammer content-view create --name rhtestinc_pup --label rhtestinc_pup 

- create composite content view
 # hammer content-view create --composite --name ccv_rhtestinc3 --name ccv_rhtestinc3

# hammer content-view list

CONTENT VIEW ID | NAME                      | LABEL                     | COMPOSITE | REPOSITORY I
----------------|---------------------------|---------------------------|-----------|-------------
29              | rhtestinc_pup             | rhtestinc_pup             |           |

32              | ccv_rhtestinc3            | ccv_rhtestinc3            | true      |

----------------|---------------------------|---------------------------|-----------|------------------


- Create version 1.0 of content view with 2 puppet modules 
# hammer puppet-module list  --repository-id 910
---|------|--------|---------|-------------------------------------
ID | NAME | AUTHOR | VERSION | UUID
---|------|--------|---------|-------------------------------------
88 | web1 | rhtest | 1.0.2   | e7cd75b6-35b7-47e5-93d0-07f2ac93c2aa
87 | app1 | rhtest | 1.0.3   | 8eb22528-4604-4cf6-9de4-b8dbff4ba366
86 | web1 | rhtest | 1.0.3   | 737c1bdb-64f7-4922-8082-e25fa4a871f4
85 | app1 | rhtest | 1.0.0   | 5ea24a76-b361-4430-8289-3baac50fc1bf
84 | web1 | rhtest | 1.0.0   | 142bbd0b-54ee-4560-b78c-89a347dbddf6
83 | app1 | rhtest | 1.0.2   | 02449387-7e84-4151-8d87-ca0343563417
---|------|--------|---------|-------------------------------------

# hammer content-view puppet-module add --uuid 5ea24a76-b361-4430-8289-3baac50fc1bf --content-view-id 29 
# hammer content-view puppet-module add --uuid 142bbd0b-54ee-4560-b78c-89a347dbddf6 --content-view-id 29 
# hammer content-view publish --id 29 
# hammer content-view version list --content-view-id 29
---|-------------------|---------|-----------------------
ID | NAME              | VERSION | LIFECYCLE ENVIRONMENTS
---|-------------------|---------|-----------------------
68 | rhtestinc_pup 1.0 | 1.0     | Library
---|-------------------|---------|-----------------------

- create version 1.0 of the composite content view containing v1.0 of rhtestinc_pup CV

# hammer content-view add-version --content-view-version-id 68 --id 32 
# hammer content-view publish --id 32 

# hammer content-view version list --content-view-id 32
---|--------------------|---------|-----------------------
ID | NAME               | VERSION | LIFECYCLE ENVIRONMENTS
---|--------------------|---------|-----------------------
70 | ccv_rhtestinc3 1.0 | 1.0     | Library
---|--------------------|---------|------------------

- Promote ccv_rhtestinc3 to all lifecycle environments (Library->dev->qa->prod)
# hammer content-view version promote --content-view-id 32 --from-lifecycle-environment Library --to-lifecycle-environment dev
# hammer content-view version promote --content-view-id 32 --from-lifecycle-environment dev --to-lifecycle-environment qa
# hammer content-view version promote --content-view-id 32 --from-lifecycle-environment qa --to-lifecycle-environment prod


- Create a new version of rhtestinc_pup CV with one updated puppet module (app1 1.0.0 -> app1 1.0.2) . Publish that .
# hammer content-view puppet-module remove --uuid 5ea24a76-b361-4430-8289-3baac50fc1bf --content-view-id 29 
# hammer content-view puppet-module add --uuid 02449387-7e84-4151-8d87-ca0343563417 --content-view-id 29 
# hammer content-view publish --id 29 
# hammer content-view version list --content-view-id 29
---|-------------------|---------|-----------------------
ID | NAME              | VERSION | LIFECYCLE ENVIRONMENTS
---|-------------------|---------|-----------------------
71 | rhtestinc_pup 2.0 | 2.0     | Library
68 | rhtestinc_pup 1.0 | 1.0     |
---|-------------------|---------|-----------------------


- Create a new version of the ccv_rhtestinc3 which contains rhtestinc_pup 2.0 . Publish that and promote it to dev and qa.
# hammer content-view remove-version --content-view-version-id 68 --id 32 
# hammer content-view add-version --content-view-version-id 71 --id 32 
# hammer content-view publish --id 32 
# hammer content-view version promote --content-view-id 32 --from-lifecycle-environment Library --to-lifecycle-environment dev 
# hammer content-view version promote --content-view-id 32 --from-lifecycle-environment dev --to-lifecycle-environment qa 

So now the setup is the following:
Library:   ccv_rhtestinc3 2.0   (consists of  rhtestinc_pup 2.0)
dev:   ccv_rhtestinc3 2.0   (consists of  rhtestinc_pup 2.0)
qa:     ccv_rhtestinc3 2.0   (consists of  rhtestinc_pup 2.0)
prod: ccv_rhtestinc3 1.0   (consists of  rhtestinc_pup 1.0)

- Push a incremental update , the web1 puppet module must be updated everywhere.

# hammer content-view version incremental-update --puppet-module-ids e7cd75b6-35b7-47e5-93d0-07f2ac93c2aa --content-view-version-id 71 --lifecycle-environment-ids=1 -
-propagate-all-composites yes
[....................................................................................................................................................................................] [100%]
Content View: rhtestinc_pup version 2.1
Added Content:
  Puppet Modules:
        rhtest-web1-1.0.2

Content View: ccv_rhtestinc3 version 2.1
Added Content:
  Puppet Modules:
        rhtest-web1-1.0.2

# hammer content-view version incremental-update --puppet-module-ids e7cd75b6-35b7-47e5-93d0-07f2ac93c2aa --content-view-version-id 68 --propagate-all-composites yes
[..................................................................................................................................................................................
..] [100%]
Content View: rhtestinc_pup version 1.1
Added Content:
  Puppet Modules:
        rhtest-web1-1.0.2

Content View: ccv_rhtestinc3 version 1.1
Added Content:
  Puppet Modules:
        rhtest-web1-1.0.2

# hammer content-view version list --content-view-id 29
---|-------------------|---------|-----------------------
ID | NAME              | VERSION | LIFECYCLE ENVIRONMENTS
---|-------------------|---------|-----------------------
73 | rhtestinc_pup 2.1 | 2.1     | Library
71 | rhtestinc_pup 2.0 | 2.0     |
75 | rhtestinc_pup 1.1 | 1.1     |
68 | rhtestinc_pup 1.0 | 1.0     |
---|-------------------|---------|-----------------------
# hammer content-view version list --content-view-id 32
---|--------------------|---------|-----------------------
ID | NAME               | VERSION | LIFECYCLE ENVIRONMENTS
---|--------------------|---------|-----------------------
74 | ccv_rhtestinc3 2.1 | 2.1     | Library, dev, qa
72 | ccv_rhtestinc3 2.0 | 2.0     |
77 | ccv_rhtestinc3 1.1 | 1.1     | prod
70 | ccv_rhtestinc3 1.0 | 1.0     |
---|--------------------|---------|-----------------------

- At this time I can remove rhtestinc_pup 1.1 without any warning.

# hammer content-view version delete --content-view-id 29 --id 75 
[....................................................................................................................................................................................] [100%]


Actual results:
The CV is removed without warning.


Expected results:
Hammer should give at least warning, that the CV is used in CCV.