Version up slapos.core 1.8.6

stack/slapos.cfg

@@ -285,7 +285,7 @@ simplegeneric = 0.8.1
 singledispatch = 3.4.0.3
 six = 1.16.0
 slapos.cookbook = 1.0.297
-slapos.core = 1.8.5
+slapos.core = 1.8.6
 slapos.extension.shared = 1.0
 slapos.libnetworkcache = 0.25
 slapos.rebootstrap = 4.5
@@ -346,6 +346,8 @@ smmap2 = 2.0.5
 traitlets = 4.3.3
 Werkzeug = 1.0.1
 wheel = 0.35.1:whl
+# for slapos.core
+selectors34 = 1.2
 
 [versions:sys.version_info < (3,8)]
 MarkupSafe = 1.0