packaging: engine-setup -support long host fqdn (#782810)

- fixed installCA.sh to exit on error
	- truncate long fqdn host to avoid failure in create ca

Change-Id: I7f3c5584b54afb78a28c0c22c10649d6d559e247

basedefs.py

@@ -138,6 +138,11 @@ CONST_FD_OPEN = 65535
 CONST_FD_LINE = "jboss           %s    nofile          %s"
 CONST_SHMMAX=35554432
 
+# This is needed for avoiding error in create_ca when supporting max cn length of 64.
+# please DONT increase this size, any value over 55 will fail the setup.
+# the truncated host-fqdn is concatenated with a random string to create a unique CN value.
+CONST_MAX_HOST_FQDN_LEN=55
+
 #text colors
 RED="\033[0;31m"
 GREEN="\033[92m"

engine-setup.py

@@ -779,7 +779,12 @@ def _createCA():
 
             # Add random string to certificate CN field
             randInt = random.randint(10000,99999)
-            uniqueCN = conf["HOST_FQDN"] + "." + str(randInt)
+
+	    # Truncating host fqdn to max allowed in certificate CN field
+	    truncatedFqdn = conf["HOST_FQDN"][0:basedefs.CONST_MAX_HOST_FQDN_LEN]
+	    logging.debug("truncated HOST_FQDN '%s' to '%s'. sized reduced to %d.."%(conf["HOST_FQDN"],truncatedFqdn,len(truncatedFqdn)))
+            uniqueCN = truncatedFqdn + "." + str(randInt)
+	    logging.debug("using unique CN: '%s' for CA certificate"%uniqueCN)
 
             # Create the CA
             cmd = [os.path.join(basedefs.DIR_OVIRT_PKI, "installCA.sh"), conf["HOST_FQDN"],