fixup! Add test case for ima file signatures

No need for run* wrappers here anymore (since commit
dd279b6), also use RPMTEST_SETUP as we
don't really need the RPMDB.

tests/rpmsigdig.at

@@ -1628,14 +1628,14 @@ RPMTEST_CLEANUP
 AT_SETUP([ima])
 AT_KEYWORDS([rpmsign file signature])
 
-RPMDB_INIT
-cp "${RPMTEST}"/data/RPMS/hello-2.0-1.x86_64.rpm "${RPMTEST}"/tmp/
-gpg2 --import ${RPMTEST}/data/keys/rpm.org-rsa-2048-test.secret
-runroot rpmsign --key-id 4344591E1964C5FC --addsign --signfiles --fskpath=/data/keys/privkey.pem /tmp/hello-2.0-1.x86_64.rpm
+RPMTEST_SETUP
+cp /data/RPMS/hello-2.0-1.x86_64.rpm /tmp/
+gpg2 --import /data/keys/rpm.org-rsa-2048-test.secret
+rpmsign --key-id 4344591E1964C5FC --addsign --signfiles --fskpath=/data/keys/privkey.pem /tmp/hello-2.0-1.x86_64.rpm
 
 RPMTEST_CHECK([
-runroot rpm -qp --qf "[%{filenames} %{filesignatures}\n]" /tmp/hello-2.0-1.x86_64.rpm | cut -c -20
-runroot rpm -qp --qf "[%{filenames} %{filesignatures}\n]" /data/RPMS/imatest-1.0-1.fc34.noarch.rpm
+rpm -qp --qf "[%{filenames} %{filesignatures}\n]" /tmp/hello-2.0-1.x86_64.rpm | cut -c -20
+rpm -qp --qf "[%{filenames} %{filesignatures}\n]" /data/RPMS/imatest-1.0-1.fc34.noarch.rpm
 ],
 [0],
 [/usr/bin/hello 03020