Update saml_uri.py

According to https://tools.ietf.org/html/rfc2985 the urn for emailAddress has to be `1.2.840.113549.1.9.1`.
In saml_uri.py this is not implemented correctly. The current version uses `PKCS_9+'1'` which equals to `1.2.840.113549.1.9.1.1`. This can be fixed by deleting the trailing '1.' from line 8. This should not cause any side-effects, because the variable `PKCS_9` in combination with `+'1'`.

Author: benjaminbecker

example/attributemaps/saml_uri.py

@@ -5,7 +5,7 @@
 NOREDUPERSON_OID = "urn:oid:1.3.6.1.4.1.2428.90.1."
 NETSCAPE_LDAP = "urn:oid:2.16.840.1.113730.3.1."
 UCL_DIR_PILOT = 'urn:oid:0.9.2342.19200300.100.1.'
-PKCS_9 = "urn:oid:1.2.840.113549.1.9.1."
+PKCS_9 = "urn:oid:1.2.840.113549.1.9."
 UMICH = "urn:oid:1.3.6.1.4.1.250.1.57."
 
 MAP = {
@@ -196,4 +196,4 @@
         'labeledURI': UMICH+'57',
         'uid': UCL_DIR_PILOT+'1'
     }
-}  
+}