package_manager.py: print running dnf command

This can make debug easier, for example, makes it easy to run the
command mannually.

(From OE-Core rev: 220b912237da78d257c5310bd07db89489afede1)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oe/package_manager.py

@@ -706,6 +706,7 @@ class RpmPM(PackageManager):
                              "--setopt=logdir=%s" % (self.d.getVar('T'))
                             ]
         cmd = [dnf_cmd] + standard_dnf_args + dnf_args
+        bb.note('Running %s' % ' '.join(cmd))
         try:
             output = subprocess.check_output(cmd,stderr=subprocess.STDOUT).decode("utf-8")
             if print_output: