tests: 06_test_simcards: restart pcscd first
We found that the pcscd can crash while flashing the octsim firmware.
Restart the pcscd after the firmware is flashed, right before we use
pcscd.
Related: OS#7022
Related: osmo-ci I9bcbbba156de0cea1f7fa49bfaeb99e6f1f90647
Change-Id: Ibfd8aae789b4b0269bc6f21bfe2b2a5c38bc7cd2
