gitignore: ignore PLY-generated files
gitignore: ignore PLY-generated files

The files: parser_lex.py and parser_tab.py are generated by PLY.  Add them
to .gitignore to avoid including them in patches.

Change-Id: Ifb0f4a65f512c972bd3d0a27690aa16ddeba826e
Signed-off-by: Adam Litke <db68fba232b2c49ed3e9d3081df349dde7b61dfd@us.ibm.com>

oVirt/ovirt-engine-cli,oVirt/ovirt-engine-cli