testing: Switched PTS measurements to /usr/sbin

Due to Debian 10 linking /bin to /usr/bin which drastically
increased the number of files in /bin, the PTS measurement
was switched to /usr/sbin with a lesser number of files.

testing/tests/tnc/tnccs-20-os-pts/description.txt

@@ -11,8 +11,8 @@ protocol defined by <b>RFC 5792 PA-TNC</b>.
 <em>Product Information</em>, <em>String Version</em>, and <em>Device ID</em> up-front
 to the Attestation IMV, whereas <b>dave</b> must be prompted by the IMV to do so via an
 <em>Attribute Request</em> PA-TNC attribute. <b>dave</b> is instructed to do a reference
-measurement on all files in the <b>/bin</b> directory. <b>carol</b> is then prompted to
-measure a couple of individual files and the files in the <b>/bin</b> directory as
+measurement on all files in the <b>/usr/sbin</b> directory. <b>carol</b> is then prompted to
+measure a couple of individual files and the files in the <b>/usr/sbin</b> directory as
 well as to get metadata on the <b>/etc/tnc_confg</b> configuration file.
 <p>
 <b>carol</b> passes the health test and <b>dave</b> fails because IP forwarding is

testing/tests/tnc/tnccs-20-os-pts/hosts/carol/etc/strongswan.conf

@@ -12,6 +12,11 @@ charon-systemd {
       pts = 3
     }
   }
+  plugins {
+    eap-ttls {
+      max_message_count = 0
+    }
+  }
 }
 
 libtls {

testing/tests/tnc/tnccs-20-os-pts/hosts/dave/etc/strongswan.conf

@@ -14,6 +14,9 @@ charon-systemd {
     }
   }
   plugins {
+    eap-ttls {
+      max_message_count = 0
+    }
     tnc-imc {
       preferred_language = de
     }

testing/tests/tnc/tnccs-20-os-pts/hosts/moon/etc/strongswan.conf

@@ -14,6 +14,7 @@ charon-systemd {
   }
   plugins {
     eap-ttls {
+      max_message_count = 0
       phase2_method = md5
       phase2_piggyback = yes
       phase2_tnc = yes