Fix tests for RHEL5+, except for RHEL8

- put dnf-plugins-core and yum-utils into Requires in Makefile (it
  is OK to put non-installable package names there?)
- add builddep() handler which accepts package names;  this isn't
  working with spec file or SRPM file, but only with package names
  but it doesn't matter much (we take srpm from repository
  anyways, so using source repository for build deps is fine as
  well).
- on rhel5/rhel6 is /bin/tar, not /usr/bin/tar;  so use /bin/tar
  everywhere to keep things simple
- better prepare $HOME for 'tar-testsuite' user on RHEL5

tar-testsuite/Makefile

@@ -52,9 +52,9 @@ $(METADATA): Makefile
 	@echo "Path:            $(TEST_DIR)" >> $(METADATA)
 	@echo "Description:     TAR testsuite" >> $(METADATA)
 	@echo "Type:            Regression" >> $(METADATA)
-	@echo "TestTime:        60m" >> $(METADATA)
+	@echo "TestTime:        120m" >> $(METADATA)
 	@echo "RunFor:          tar" >> $(METADATA)
-	@echo "Requires:        tar texinfo libacl-devel rsh libselinux-devel rpm-build gcc wget" >> $(METADATA)
+	@echo "Requires:        tar rpm-build gcc dnf-plugins-core yum-utils" >> $(METADATA)
 	@echo "Priority:        Normal" >> $(METADATA)
 	@echo "License:         GPLv2" >> $(METADATA)
 	@echo "Confidential:    no" >> $(METADATA)

tar-testsuite/runtest.sh

@@ -33,6 +33,20 @@
 PACKAGE="tar"
 TESTUSER="tar-testsuite"
 
+install_build_deps()
+{
+    if rlIsFedora || rlIsRHEL '>7'; then
+        rlIsRHEL 8 && additional_repo='--enablerepo rhel-buildroot'
+        rlRun "dnf -y $additional_repo builddep $*"
+    else
+        # WARNING: yum-builddep doesn't work on RHEL5 as we would expect from
+        # modern RHEL/Fedora distributions.  Only "package names" are accepted,
+        # not SRPMs or SPEC files.  On RHEL6 this seems to work fine with SRPMs
+        # only.
+        rlRun "yum-builddep -y $*"
+    fi
+}
+
 rlJournalStart
     rlPhaseStartSetup
         rlAssertRpm $PACKAGE
@@ -40,6 +54,12 @@ rlJournalStart
         rlRun "TmpDir=\$(mktemp -d)" 0 "Creating tmp directory"
         rlRun "chmod -R 777 $TmpDir"
         rlRun "pushd $TmpDir"
+        if rlIsRHEL 5; then
+            fix_rpm='echo %_topdir $HOME > $HOME/.rpmmacros'
+            rlRun "su - $TESTUSER -c '$fix_rpm'"
+            # on RHEL5, this isn't create automatically for some reason
+            rlRun "su - $TESTUSER -c 'mkdir \$HOME/BUILD'"
+        fi
     rlPhaseEnd
 
     rlPhaseStartTest
@@ -49,8 +69,9 @@ rlJournalStart
         VERSION=`ls -1 *.src.rpm | head -1 | sed 's/tar-\([0-9.]*\).*src.rpm/\1/'`
         RPM_NAME=`ls -1 *.src.rpm | head -1`
         RPM_FULL_NAME=`readlink -f $RPM_NAME`
-        SPECFILE=/home/$TESTUSER/rpmbuild/SPECS/tar.spec
-        BUILDDIR=/home/$TESTUSER/rpmbuild/BUILD/tar-$VERSION
+        TOPDIR=$(su - "$TESTUSER" -c 'rpm --eval %_topdir')
+        SPECFILE=$TOPDIR/SPECS/tar.spec
+        BUILDDIR=$TOPDIR/BUILD/tar-$VERSION
 
         rlRun "chmod -R 777 $TmpDir"
 
@@ -63,14 +84,14 @@ rlJournalStart
             rlLog "Version: $VERSION"
 
             # Dependencies
-            rlRun "yum-builddep -y $SPECFILE"
+            install_build_deps tar
 
             # Building
             rlRun -s "su $TESTUSER -c \"rpmbuild -bc $SPECFILE\""
             rlRun "mv $rlRun_LOG $TmpDir/rpmbuild.log"
 
             # Using system /bin/tar for testsuite
-            wrapper='export PATH=/usr/bin ; exec tar "$@"'
+            wrapper='export PATH=/bin ; exec tar "$@"'
             wrapper=`printf "%q" "$wrapper"`
             rlRun "echo $wrapper > $BUILDDIR/src/tar"