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Description of problem:
Trying to blacklist a module adding "modprobe.blacklist=<module_name>" to kernel option does not blacklist the module during installation.
The module is thought blacklisted once the server boots up after installation is complete.

Version-Release number of selected component (if applicable):
anaconda 21.48.22.44-1

How reproducible:
100%

Steps to Reproduce:
1.Install server provision and add "modprobe.blacklist=<module_name>" to kernel_options

Actual results:
Module still gets loaded during installation

On RHEL-7.1 this problem does not happen.

https://github.com/haraldh/dracut/commit/bcc2132dab5bf276a0bd4dce606f4ef534b27800

additionally, and more important:
https://github.com/haraldh/dracut/commit/7fd112f

tested dracut-033-349.el7 and confirmed the module got blacklisted during provision.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2091.html