fix(NODE-1498): allow read access to more hardware info for node_exporter (#2121)

Give prometheus `node_exporter` more read access to device info:
* Allow reading udev state data from /run/udev/data
* Allow reading /proc/pressure
* Allow reading under mount points with mnt_t

(NODE-1498)

Author: nabdullindfinity

ic-os/components/selinux/node_exporter/node_exporter.te

@@ -115,3 +115,12 @@ require {
     type user_runtime_root_t;
 }
 allow node_exporter_t user_runtime_root_t:dir { search };
+
+# Allow reading udev state data from /run/udev/data
+udev_read_runtime_files(node_exporter_t)
+
+# Allow reading /proc/pressure
+kernel_read_psi(node_exporter_t)
+
+# Allow reading under mount points with mnt_t
+files_list_mnt(node_exporter_t)