remove checkmine engine. add x509.get_pem_entries to managers mine_functions. simplify mine update during soup

salt/manager/tools/sbin/soup

@@ -580,7 +580,7 @@ update_centos_repo() {
 update_salt_mine() {
     echo "Populating the mine with network.ip_addrs pillar.host.mainint for each host."
     set +e
-    salt \* cmd.run cmd='MAININT=$(salt-call pillar.get host:mainint --out=newline_values_only) && salt-call mine.send name=network.ip_addrs interface="$MAININT"'
+    salt \* mine.update
     set -e
 }