Drop support for package_errors.log + EXIT_ON_MISSING_PACKAGES

This was unreliable already within FAI, esp. when aborting and rerunning
a build.

Now with the switch from FAI to our minifai, we no longer support
EXIT_ON_MISSING_PACKAGES. Minifai operates per class and aborts on any
package installation that fails. There's no point in generating
package_errors.log and TEST-MissingPackages.xml (meant for inclusion in
e.g. Jenkins jobs), so drop config/scripts/GRMLBASE/01-packages overall,
and related code from grml-live and setting in etc/grml/grml-live.conf.

While at it, drop unused $VERBOSE, as complained by shellcheck.

Closes: #295

etc/grml/grml-live.conf

@@ -148,11 +148,6 @@
 # the mksquashfs option -ef:
 # SQUASHFS_EXCLUDES_FILE="${GRML_FAI_CONFIG}/grml/squashfs-excludes"
 
-# Do you want to exit grml-live if some packages were requested for installation
-# on fresh installs but are missing on the generated ISO finally?
-# By default the package list is sent to stdout but grml-live doesn't interrupt.
-# EXIT_ON_MISSING_PACKAGES=1
-
 # Do you want to use a special string for identifying the ISO?
 # By default the grml-name and version string are used as a base for generating
 # /conf/bootid.txt on the ISO. If you want to use a different value feel free to

grml-live

@@ -112,7 +112,6 @@ fi
 
 # lsb-functions and configuration stuff {{{
 # make sure they are not set by default
-VERBOSE='1'
 FORCE=''
 UPDATE=''
 BUILD_ONLY=''
@@ -755,85 +754,6 @@ else
 fi # BUILD_DIRTY?
 # }}}
 
-# package validator {{{
-CHECKLOG="$LOG_OUTPUT"/fai/
-if [ -r "$CHECKLOG/dpkg.selections" ] ; then
-  package_count=$(wc -l "$CHECKLOG/dpkg.selections" | awk '{print $1}')
-else
-  package_count="unknown"
-fi
-
-mkdir -p "$REPORTS"
-REPORT_MISSING_PACKAGES="${REPORTS}/TEST-MissingPackages.xml"
-
-# check for missing packages
-if ! [ -s "$CHECKLOG/package_errors.log" ] ; then
-  einfo "No missing packages found, generating empty junit report."
-
-  cat > "${REPORT_MISSING_PACKAGES}" << EOF
-<?xml version="1.0" encoding="UTF-8"?>
-<testsuite name="grml-live-missing-packages" tests="${package_count}" time="1" failures="0" errors="0" skipped="0" assertions="0">
-  <testcase name="test_missing_packages" time="0" assertions="0">
-  </testcase>
-  <system-out>
-  </system-out>
-  <system-err>
-  </system-err>
-</testsuite>
-EOF
-  eend 0
-else
-  einfo "Missing packages found, generating junit report."
-
-  if [ -r "$CHECKLOG/package_errors.log" ] ; then
-    package_errors=$(wc -l "$CHECKLOG/package_errors.log" | awk '{print $1}')
-  else
-    package_errors="unknown"
-  fi
-
-  mkdir -p "$REPORTS"
-  REPORT_MISSING_PACKAGES="${REPORTS}/TEST-MissingPackages.xml"
-
-  cat > "${REPORT_MISSING_PACKAGES}" << EOF
-<?xml version="1.0" encoding="UTF-8"?>
-<testsuite name="grml-live-missing-packages" tests="${package_count}" time="1" failures="${package_errors}" errors="${package_errors}" skipped="0" assertions="0">
-EOF
-
-  # shellcheck disable=SC2013 # We expect each line to be a single word.
-  for package in $(awk '{print $1}' "${CHECKLOG}/package_errors.log" | sed 's;/;\\/;') ; do
-    failure_reason="$(awk "/$package/ {print \$2}" "${CHECKLOG}/package_errors.log")"
-    cat >> "${REPORT_MISSING_PACKAGES}" << EOF
-  <testcase name="test_missing_packages_${package}" time="0" assertions="0">
-    <failure type="${failure_reason}" message="Package ${package} is missing">
-Package $package is missing in chroot (${failure_reason})
-  </failure>
-  </testcase>
-EOF
-  done
-
-  cat >> "${REPORT_MISSING_PACKAGES}" << EOF
-  <system-out>
-  </system-out>
-  <system-err>
-  </system-err>
-</testsuite>
-EOF
-  eend 0
-
-  if [ -n "$EXIT_ON_MISSING_PACKAGES" ] && [ -z "$BUILD_DIRTY" ] ; then
-    eerror "The following packages were requested for installation but could not be processed:"
-    cat "$CHECKLOG/package_errors.log"
-    eerror "... exiting as requested via \$EXIT_ON_MISSING_PACKAGES."
-    eend 1
-    bailout 13
-  else
-    ewarn "The following packages were requested for installation but could not be processed:"
-    cat "$CHECKLOG/package_errors.log"
-    eend 0
-  fi
-fi
-# }}}
-
 # grub boot {{{
 grub_setup() {
   EFI_IMG="/boot/efi.img"