(maint) Skip facter caching test on solaris 10

Due to FACT-3209, any host that lacks IPv6 will cause the networking fact cache
to be updated. And the test will fail if the before and after times cross the
minute boundary. Neither Solaris 10 Intel or SPARC have IPv6 enabled, so skip.

Author: joshcooper

acceptance/tests/options/config_file/ttls_cache_missing_facts.rb

@@ -2,6 +2,7 @@
   tag 'risk:high'
 
   confine :except, :platform => 'aix-7.2-power' # FACT-3209
+  confine :except, :platform => /^solaris-10-/ # FACT-3209
 
   require 'facter/acceptance/user_fact_utils'
   extend Facter::Acceptance::UserFactUtils