spdk: update expected-nr-hugepages to 512 in environment_check.sh

Longhorn 5739

Signed-off-by: Derek Su <derek.su@suse.com>
(cherry picked from commit a5041e1cf3)

scripts/environment_check.sh

@@ -462,14 +462,14 @@ Usage: $0 [OPTIONS]
 
 Options:
     -s, --enable-spdk           Enable checking SPDK prerequisites
-    -p, --expected-nr-hugepages Expected number of hugepages for SPDK. Default: 1024
+    -p, --expected-nr-hugepages Expected number of 2 MiB hugepages for SPDK. Default: 512
     -h, --help                  Show this help message and exit
 EOF
     exit 0
 }
 
 enable_spdk=false
-expected_nr_hugepages=1024
+expected_nr_hugepages=512
 while [[ $# -gt 0 ]]; do
     opt="$1"
     case $opt in