[noha] Disable proxy certificate generation

[noha] Disable proxy certificate generation

noha scenarios try to generate the proxy SSL cert using the Salt
Master CA authority. However, this requires a `salt-minion` restart
between the CA configuration and the cert generation (see [1]).
Since we don't use this cert anyway, let's just disable it for cfg01.

JIRA: FUEL-377

[1] https://github.com/salt-formulas/salt-formula-salt/issues/67

Change-Id: I8e88200e0d5614f0034c0c77e6ba675dc7ef0c11
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
(cherry picked from commit 016db55bd5cc07d32926b60d59b1fdd7e2471705)