added unittest for symetric crypto

tests/unittests.cfg

@@ -178,6 +178,17 @@ dxmorg@florida.cops.gov
   </test>
 </test>
 
+#
+# symetric encryption test
+<test check-sym-encrypt>
+  cmd = echo HELLOWORLD | $pcp -e -O testsymencrypted -x a
+  expect = /symetrically/
+</test>
+<test check-sym-decrypt>
+  cmd = $pcp -d -I testsymencrypted -x a
+  expect = /HELLO/
+</test>
+
 
 #
 # check usage of unencrypted secret key