Info: make builddir add owner write permissions to all files

Since bcfg2-info isn't normally run as root, it can remove write
permissions from itself in certain situations.  This patch ensures
that owner write is added to the mode for all files written by
builddir.

For example, suppose a bundle specifies a file /etc/foo/private
with mode 0444.  The POSIX tool will create /etc/foo with mode
0555.  Any subsequent files that are specified to exist in
/etc/foo will not be created because bcfg2-info will hit a
permission denied error.
Make pylint happy
Revert "Make pylint happy"

This reverts commit 8f4a8d386f6f2988de08e686f04c457a62189dfd.
Revert "Info: make builddir add owner write permissions to all files"

This reverts commit ab62481b597edcc099811039f7fd60743353d979.
New approach, just create nwe directories with mode 0755 regardless
Merge branch 'bcfg2-info-builddir-add-owner-write' of https://github.com/fennm/bcfg2 into maint