Consistently use ucx~vfs everywhere

toolchains/gcc-13_2_0-openmpi-4_1_6-cuda-12_6_2/spack.yaml.jinja

@@ -3,7 +3,7 @@ spack:
   - compilers:
     - "{{ toolchain_compiler }}"
   - mpis:
-    - openmpi@4.1.6+cuda cuda_arch={{ cuda_arch }} fabrics=ucx schedulers=slurm ^slurm@22-05-8-1+pmix^ucx@1.15.0+cma+cuda+dc+dm~gdrcopy+ib_hw_tm+knem+mlx5_dv+rc+rdmacm+thread_multiple+ud+verbs+vfs~xpmem
+    - openmpi@4.1.6+cuda cuda_arch={{ cuda_arch }} fabrics=ucx schedulers=slurm ^slurm@22-05-8-1+pmix^ucx@1.15.0+cma+cuda+dc+dm~gdrcopy+ib_hw_tm+knem+mlx5_dv+rc+rdmacm+thread_multiple+ud+verbs~vfs~xpmem
   - packages:
     - binutils@2.40+headers+ld
     - openblas@0.3.24

toolchains/gcc-13_2_0-openmpi-4_1_6/spack.yaml.jinja

@@ -3,7 +3,7 @@ spack:
   - compilers:
     - "{{ toolchain_compiler }}"
   - mpis:
-    - openmpi@4.1.6~cuda fabrics=ucx schedulers=slurm ^slurm@22-05-8-1+pmix^ucx@1.15.0+cma~cuda+dc+dm~gdrcopy+ib_hw_tm+knem+mlx5_dv+rc+rdmacm+thread_multiple+ud+verbs+vfs~xpmem
+    - openmpi@4.1.6~cuda fabrics=ucx schedulers=slurm ^slurm@22-05-8-1+pmix^ucx@1.15.0+cma~cuda+dc+dm~gdrcopy+ib_hw_tm+knem+mlx5_dv+rc+rdmacm+thread_multiple+ud+verbs~vfs~xpmem
   - packages:
     - binutils@2.40+headers+ld
     - openblas@0.3.24