Provide the ability to change the name of a topology

[mitchell852]

I'm submitting a ...

• improvement request (usability, performance, tech debt, etc.)

Traffic Control components affected ...

• Traffic Ops
• Traffic Portal

Current behavior:

Currently you cannot change the name of a topology

New behavior:

Allow the user to change the name of a topology thru the API and cascade that change to all appropriate areas. I.e. ds.toplogy

Minimal reproduction of the problem with instructions:

In TP, navigate to an existing topology and notice that the name field is disabled.

Anything else:

Changing a topology name will probably dirty the snapshot for that CDN in 2 places: the topology section and the delivery service section (if the topology is assigned to a ds)

[srijeet0406]

@mitchell852 I'm guessing this will involve a database migration, since the primary key for the topology table is its name.

[rawlinp]

I believe we can actually change the PK and it auto-updates the FK references.

[rimashah25]

I can take this one.