netdata: update to version 1.28.0

Refreshed patches and removed one backported patch

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

admin/netdata/patches/004-patch-collectors_python.d.plugin_Makefile.am.patch

@@ -1,8 +1,8 @@
 --- a/collectors/python.d.plugin/Makefile.am
 +++ b/collectors/python.d.plugin/Makefile.am
-@@ -142,109 +142,3 @@ dist_third_party_DATA = \
-     python_modules/third_party/boinc_client.py \
+@@ -145,109 +145,3 @@ dist_third_party_DATA = \
      python_modules/third_party/monotonic.py \
+     python_modules/third_party/filelock.py \
      $(NULL)
 -
 -pythonyaml2dir=$(pythonmodulesdir)/pyyaml2