Fix integration test

Problem: integration test needs to add new remote when triggered from
fork
8 jobs for infer-symbol-types-from-definition in 22 minutes and 34 seconds (queued for 12 minutes and 13 seconds)
latest
Name Stage Failure
failed
pycodegen-integration Test
23.19s call     pygrandchem_tests/test_grandchem.ipynb::test_grandchem.ipynb
22.90s call pygrandchem_tests/test_mu_equivalence.py::test_no_staggered_pre_computation
16.78s call pygrandchem_tests/test_phi_equivalence.py::test_standard_config
16.35s call pygrandchem_tests/test_mu_equivalence.py::test_with_staggered_pre_computation
11.54s call pygrandchem_tests/test_phi_equivalence.py::test_phi_staggered_equivalence_on_random

(0.00 durations hidden. Use -vv to show these durations.)
============== 2 failed, 7 passed, 1186 warnings in 91.85 seconds ==============
ERROR: Job failed: exit code 1
failed
minimal-sympy-master Test
    result = str(self._print(node))
File "/builds/seitz/pystencils/pystencils/backends/cbackend.py", line 177, in _print
return getattr(self, method_name)(node)
File "/builds/seitz/pystencils/pystencils/backends/cbackend.py", line 184, in _print_KernelFunction
function_arguments = ["%s %s" % (self._print(s.symbol.dtype), s.symbol.name) for s in node.get_parameters()]
File "/builds/seitz/pystencils/pystencils/backends/cbackend.py", line 184, in <listcomp>
function_arguments = ["%s %s" % (self._print(s.symbol.dtype), s.symbol.name) for s in node.get_parameters()]
AttributeError: 'Symbol' object has no attribute 'dtype'
ERROR: Job failed: exit code 1