Prefer lsblk over blkid

Prior to this commit, the partitions resolver only used lsblk as a
fallback if blkid did not return any information.

However, there are many advantages to lsblk. lsblk does not necessarily
require root (while blkid does), it returns more information (like
partition type GUIDs), and blkid specifically recommends using lsblk in
its manpage.

This commit updates the partitions resolver to prefer lsblk and use
blkid as a fallback.

lib/facter/resolvers/partitions.rb

@@ -73,9 +73,10 @@ def populate_partitions(partition_name, block_path, blkid_and_lsblk, backing_fil
         end
 
         def populate_from_syscalls(partition_name, blkid_and_lsblk)
-          part_info = populate_from_blkid(partition_name, blkid_and_lsblk)
+          # Prefer lsblk over blkid since lsblk does not require root, returns more information, and is recommended by blkid
+          part_info = populate_from_lsblk(partition_name, blkid_and_lsblk)
 
-          return populate_from_lsblk(partition_name, blkid_and_lsblk) if part_info.empty?
+          return populate_from_blkid(partition_name, blkid_and_lsblk) if part_info.empty?
 
           part_info
         end