new label for incremental control files

Test: manual with incremental installation
Test: coral:/data/incremental/MT_data_incremental_tmp_1658593565/mount # ls -lZ .pending_reads
Test: -rw-rw-rw- 1 root root u:object_r:incremental_control_file:s0  0 1969-12-31 19:00 .pending_reads
BUG: 133435829
Change-Id: Ie090e085d94c5121bf61237974effecef2dcb180
3 files changed