Update google_riscv-dv to google/riscv-dv@07599f6 (#240)

Update code from upstream repository https://github.com/google/riscv-
dv to revision 07599f689a385794cb73932922008bdbe8131d82

* Fix introduced TypeError in run.py (Udi)

vendor/google_riscv-dv.lock.hjson

@@ -9,6 +9,6 @@
   upstream:
   {
     url: https://github.com/google/riscv-dv
-    rev: e905e9f134e0b7cf7da491218d1a30c75ce8649a
+    rev: 07599f689a385794cb73932922008bdbe8131d82
   }
 }

vendor/google_riscv-dv/run.py

@@ -161,7 +161,7 @@ def gen(test_list, csr_file, end_signature_addr, isa, simulator,
           rand_seed = get_seed(seed)
           cmd = lsf_cmd + " " + sim_cmd.rstrip() + \
                 (" +UVM_TESTNAME=%s " % test['gen_test']) + \
-                (" +num_of_tests=%d " % 'iterations') + \
+                (" +num_of_tests=%i " % iterations) + \
                 (" +asm_file_name=%s/asm_tests/%s " % (output_dir, test['test'])) + \
                 (" -l %s/sim_%s.log " % (output_dir, test['test']))
           cmd = re.sub("<seed>", str(rand_seed), cmd)