runtime/dnf: Add new dnf test cases

Add test cases to test “exclude” and “installroot“ options, also modify
the logic of filtering packages on the feed to have all the packages
needed by the tests.

[YOCTO #10744]

(From OE-Core rev: 1121806603c6f621d084b692216f3f616a0768dc)

(From OE-Core rev: e1b050f53ece2a31cd6866d2d737d7c67a44cea4)

Signed-off-by: Jose Perez Carranza <jose.perez.carranza@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/testimage.bbclass

@@ -357,6 +357,7 @@ def create_index(arg):
     return None
 
 def create_rpm_index(d):
+    import glob
     # Index RPMs
     rpm_createrepo = bb.utils.which(os.getenv('PATH'), "createrepo_c")
     index_cmds = []
@@ -373,9 +374,13 @@ def create_rpm_index(d):
         lf = bb.utils.lockfile(lockfilename, False)
         oe.path.copyhardlinktree(rpm_dir, idx_path)
         # Full indexes overload a 256MB image so reduce the number of rpms
-        # in the feed. Filter to r* since we use the run-postinst packages and
-        # this leaves some allarch and machine arch packages too.
-        bb.utils.remove(idx_path + "*/[a-qs-z]*.rpm")
+        # in the feed by filtering to specific packages needed by the tests.
+        package_list = glob.glob(idx_path + "*/*.rpm")
+
+        for pkg in package_list:
+            if not os.path.basename(pkg).startswith(("rpm", "run-postinsts", "busybox", "bash", "update-alternatives", "libc6", "curl", "musl")):
+                bb.utils.remove(pkg)
+
         bb.utils.unlockfile(lf)
         cmd = '%s --update -q %s' % (rpm_createrepo, idx_path)