This PR tackles two problems, but I felt that I will add it to a single PR. Let me know if I must split it into two.
The first issue is the missing variant of complex_align on Kokkos. Trilinos, when built with the builtin kokkos version will set complex_align to OFF, which is the opposite of what the default in the Kokkos package is.
This PR adds the variant with default value true, but enforcing it to false, when building trilinos.
Also PETSc, when building for complex scalars and kokkos support enforces that the variant complex_align is set to false.

The second issue this PR tackles is the incorrect dependency on the external Kokkos package for trilinos. Basically this line

        if spec.satisfies("@14.4.0 +kokkos"):

This is missing the upper boundary, and only restricts on the very specific trilinos version.
This leads to trilinos pulling in the internal kokkos version, and one would end up with two kokkos libraries. One provided by kokkos (correct) and one provided by trilinos (incorrect).
Also I have the feeling that when we enable trilinos+kokkos, we actually also want to unbundle kokkos-kernels from trilinos, hence I added this too.
All in all, using this PR we can build a version of trilinos that links to kokkos and kokkos-kernels without pulling in the bundled versions inside trilinos.

Without this PR, building an environment with a view would lead to multiple libkokkos_*.so, provided by trilinos, kokkos and kokkos-kernels.