Fixing performance and bz1284866 test

Performance/bz2166178-nmap-much-slower-after-bz1596834-got-fixed-in/main.fmf

@@ -20,6 +20,7 @@ test: ./runtest.sh
 framework: beakerlib
 recommend:
   - nmap
+  - bc
 duration: 5m
 extra-nitrate: TC#0615071
 extra-summary: /CoreOS/nmap/Performance/bz2166178-nmap-much-slower-after-bz1596834-got-fixed-in

Regression/bz1284866-nmap-is-not-able-to-resolve-hostname/main.fmf

@@ -12,6 +12,9 @@ recommend:
   - bind
 duration: 30m
 enabled: true
+tag:
+  - Tier3
+tier: '3'
 link:
   - relates: https://bugzilla.redhat.com/show_bug.cgi?id=1284866
   - relates: https://bugzilla.redhat.com/show_bug.cgi?id=1614196

Regression/bz1284866-nmap-is-not-able-to-resolve-hostname/runtest.sh

@@ -120,7 +120,7 @@ rlJournalStart
     rlPhaseStartSetup
         rlAssertRpm "$PACKAGE"
         # --system-dns leads to use of glibc which looks at /etc/nsswitch.conf, that is different in Fedoras, which caused failing of the test
-        if rlIsFedora; then
+        if rlIsFedora || rlIsRHELLike '>=10'; then
             rlRun "sed -i 's/^hosts\: .*/hosts\:      files dns myhostname/g' /etc/nsswitch.conf" 0 "edit config to allow login"
             rlFileBackup "/etc/nsswitch.conf"
         fi