Laghos spack-v.1 and umpire changes

[rfhaque]

Description

This PR makes the following changes:

1. Adds support for building mesh in laghos instead of using a prebuilt mesh file
2. Adds supports for building GPU aware MPI in laghos, mfem and hypre, when applicable
3. Adds support for umpire pools in laghos - PR by Tom shared device umpire pool CEED/Laghos#198
4. switches to the upstreamed caliper package.py
5. syncs with the upstreamed mfem package.py with additional changes for caliper support
6. Builds and runs on dane, matrix and tuolumne
7. The caliperized branch of Laghos must be merged [with the main branch https://github.com/wdhawkins/Laghos.git (caliper branch)](Basic Caliper support CEED/Laghos#196)
8. The Laghos PR (Add options to generate mesh from command line CEED/Laghos#197) must be merged
9. The git URL in laghos package.py must be changed to the main Laghos repo at https://github.com/CEED/Laghos.git
10. If package.py upstreamed to Spack is insufficient, add/modify repo/benchmark_name/package.py plus: create, self-assign, and link here a follow up issue with a link to the PR in the Spack repo.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 65.33%. Comparing base (b1c2293) to head (36301bb).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1087      +/-   ##
===========================================
+ Coverage    65.20%   65.33%   +0.12%     
===========================================
  Files           44       44              
  Lines         3245     3245              
  Branches       257      257              
===========================================
+ Hits          2116     2120       +4     
+ Misses        1122     1118       -4     
  Partials         7        7              

see 1 file with indirect coverage changes

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[pearce8]

@rfhaque the laghos runs seem to be failing on all systems.