Disable shebang mangling on input files

The DKMS module installs the entire source tree, including the .in files
that will later be substituted when building. This makes
brp_mangle_shebangs complain about shebang lines in the .in files.

Exclude everything under /usr/src from shebang mangling in the DKMS
package.

The KMOD package doesn't contain any of the files it excludes from
mangling, so just drop the exclusion.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: João Carlos Mendes Luís <jonny@jonny.eng.br>
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Closes #10581 
Closes #10582

rpm/generic/zfs-dkms.spec.in

@@ -4,8 +4,8 @@
 %define not_rpm 1
 %endif
 
-# See comment in zfs.spec.in.
-%global __brp_mangle_shebangs_exclude_from arc_summary.py|arcstat.py|dbufstat.py|test-runner.py|zts-report.py
+# Exclude input files from mangling
+%global __brp_mangle_shebangs_exclude_from ^/usr/src/.*$
 
 %define module  @PACKAGE@
 %define mkconf  scripts/dkms.mkconf

rpm/generic/zfs-kmod.spec.in

@@ -1,8 +1,5 @@
 %define module  @PACKAGE@
 
-# See comment in zfs.spec.in.
-%global __brp_mangle_shebangs_exclude_from arc_summary.py|arcstat.py|dbufstat.py|test-runner.py|zts-report.py
-
 %if !%{defined ksrc}
 %if 0%{?rhel}%{?fedora}
 %define ksrc    ${kernel_version##*___}

rpm/redhat/zfs-kmod.spec.in

@@ -1,9 +1,6 @@
 %bcond_with     debug
 %bcond_with     debuginfo
 
-# See comment in zfs.spec.in.
-%global __brp_mangle_shebangs_exclude_from arc_summary.py|arcstat.py|dbufstat.py|test-runner.py|zts-report.py
-
 Name:           @PACKAGE@-kmod
 Version:        @VERSION@
 Release:        @RELEASE@%{?dist}