Changes

pySim-shell: reset card in method equip

When the equip method is running, all kinds of states in pySim-shell are reset.
To be sure that the card state is also reset (normally this is the case because
usually init_card is called before equip), we should send an explicit reset to
the card as well.

Related: OS#6640
Change-Id: I622a2df2c9184841f72abd18483bfbfd00b2f464