[ssl_mgmt] Add a TODO file

ssl_mgmt/TODO

@@ -0,0 +1,9 @@
+* Sign notification emails (+ create gpg key for that)
+* Support creating non root certificates:
+  -> add an option for giving the ownership and rights it should have
+  -> Break up openssl.cnf.in into several files (1 for root CA, 1 for CSR)
+  -> Implement functionnality via no -batch and adapted policy_match
+  -> Make certificate needed by testsuite be generated with ssl_mgmt
+* Support creating root CA:
+  -> Implement functionnality following what was done for non-root certificates
+  -> Make root CA needed by testsuite be generated with ssl_mgmt