Bug: `periodic_bc` is not communicated

[wilfonba]

The logical storage array periodic_bc is not communicated after its elements are assigned by rank 0 in src/simulation/m_start_up.fpp. This breaks periodic Euler-Lagrange simulations on more than 1 MPI rank. This was likely introduced when the input parameter broadcasts were largely automated.

Diff to fix the problem when I (or someone else) get to it

diff --git a/src/simulation/m_mpi_proxy.fpp b/src/simulation/m_mpi_proxy.fpp
index f8fe85a9..3752d0f1 100644
--- a/src/simulation/m_mpi_proxy.fpp
+++ b/src/simulation/m_mpi_proxy.fpp
@@ -146,9 +146,11 @@ contains
             #:endfor
         end do
 
-        ! manual: cfl_dt (runtime-computed logical), bc_io (BC-file existence)
+        ! manual: cfl_dt (runtime-computed logical), bc_io (BC-file existence),
+        !         periodic_bc (global boundary periodicity flags)
         call MPI_BCAST(cfl_dt, 1, MPI_LOGICAL, 0, MPI_COMM_WORLD, ierr)
         call MPI_BCAST(bc_io, 1, MPI_LOGICAL, 0, MPI_COMM_WORLD, ierr)
+        call MPI_BCAST(periodic_bc, 3, MPI_LOGICAL, 0, MPI_COMM_WORLD, ierr)
 
         ! manual: shear_stress, bulk_stress (derived from Re_size post-init on all ranks),
         !         bodyForces (derived from bf_x/y/z)