/usr/share/opensips/pi_http/cpl-mod is in opensips-http-modules 2.2.2-3build4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | 	<!-- cpl provisionning -->
	<mod><mod_name>cpl</mod_name>
		<cmd><cmd_name>show</cmd_name>
			<db_table_id>cpl</db_table_id>
			<cmd_type>DB_QUERY</cmd_type>
			<query_cols>
				<col><field>id</field><link_cmd>update</link_cmd></col>
				<col><field>username</field></col>
				<col><field>domain</field></col>
				<col><field>cpl_xml</field></col>
				<col><field>cpl_bin</field></col>
			</query_cols>
		</cmd>
		<cmd><cmd_name>add</cmd_name>
			<db_table_id>cpl</db_table_id>
			<cmd_type>DB_INSERT</cmd_type>
			<query_cols>
				<col><field>username</field></col>
				<col><field>domain</field></col>
				<col><field>cpl_xml</field></col>
				<col><field>cpl_bin</field></col>
			</query_cols>
		</cmd>
		<cmd><cmd_name>update</cmd_name>
			<db_table_id>cpl</db_table_id>
			<cmd_type>DB_UPDATE</cmd_type>
			<clause_cols>
				<col><field>id</field><operator>=</operator></col>
			</clause_cols>
			<query_cols>
				<col><field>username</field></col>
				<col><field>domain</field></col>
				<col><field>cpl_xml</field></col>
				<col><field>cpl_bin</field></col>
			</query_cols>
		</cmd>
		<cmd><cmd_name>delete</cmd_name>
			<db_table_id>cpl</db_table_id>
			<cmd_type>DB_DELETE</cmd_type>
			<clause_cols>
				<col><field>id</field><operator>=</operator></col>
			</clause_cols>
		</cmd>
	</mod>
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