Skip file of kirk uses regex search() instead of full match, causing unintended test skipping

[WRxwang]

When using a skip file (-S option) to skip specific tests, kirk incorrectly skips tests whose names contain the skip pattern as a substring, rather than only skipping tests that exactly match the pattern.
For example:
root@qemux86-64:/opt/wr-test/testcases/ltp/fs# cat /opt/wr-test/skipfile.ltp
ftest01

Running:
kirk -n -v -T 3h -f fs -o /opt/ltp/results/LTP_results.json -S /opt/wr-test/skipfile.ltp

Both ftest01 and lftest01 are skipped, because lftest01 contains the substring ftest01.