Installing CDT-LSP does a partial CDT install

[jonahgraham]

If a user installs CDT-LSP (e.g. form SimRel) only a subset of CDT is installed, just those bundles directly referenced by CDT-LSP bundles.

I think it may be a good idea for CDT-LSP's feature to depend on CDT's main feature(s) so that the CDT install is complete (and updatable). For example, installing CDT-LSP will add the CDT-LSP update site (see #340) to available sites, but because the CDT features are not installed, the CDT update site won't be added.

It leaves users in a somewhat broken state, for example the new C/C++ wizard does not have any valid project types:

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And there are no launch configurations:

[ghentschke]

I am not sure what is the expectation here.
Does the CDT-LSP install provide the cdt-lsp bundles only or should it provide a whole cdt install as well?

I thought it should provide the two cdt-lsp bundles only.

[jonahgraham]

Selecting CDT-LSP installs the org.eclipse.cdt.lsp.* bundles, and all the bundles that they depend on. So if a user doesn't have CDT installed, and they install CDT-LSP they end up in a weird situation.

I don't recommend we change this today, lets leave it until after the branch as the workaround is easy enough - to go back and install CDT's feature(s)