config: cgroup_config_insert_into_mount_table() use strncpy()

config: cgroup_config_insert_into_mount_table() use strncpy()

Fix copy into fixed size buffer warning, reported by Coverity tool:

CID 258282 (#2 of 2): Copy into fixed size buffer (STRING_OVERFLOW)9.
fixed_size_dest: You might overrun the 4096-character fixed-size string
config_mount_table[config_table_index].mount.path by copying mount_point
without checking the length.
parameter_as_source: Note: This defect has an elevated risk because the
source argument is a parameter of the current function

Also, convert config_mount_table[config_table_index].name strcpy to
strncpy.

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
(cherry picked from commit 4c8e4fd284b4677e5e9bab4f9e13b0866020b499)