Bug 2208 - pcc-mock: enhancemnets

Bug 2208 - pcc-mock: enhancemnets

*new functionality
- refuse operations with not delegated LSP
- refuse removing of non PCE-initiated LSPs
- delegate PCC's LSPs to the first PCE at start-up
- support "return delegate" request from PCE for PCC's LSPs, re-delegate, after the "redelegation timeout" expires, to the next PCE in cyclic order
- support "delegate" and "return delegation" for PCE-initiated LSPs, delete LSP if "state-timeout" expires
- if PCE connects, report all LSPs (PCC's and PCE-initiated) with actual state

*new input arguments
--redelegation-timeout <seconds>, default 0 - start timer when delegation for PCC's LSP is returned or when PCE fails;
hold delegation for PCE until expiration; timout is cancelled when LSP is delegated to PCE

--state-timeout <seconds>, default -1 (infinite) - start timer when delegation is returned or when PCE fails;
after timeout expiration, LSP is removed; timeout is cancelled when LSP is delegated to PCE

*new PCEP error added
- LSP is not PCE-initiated Error-type=19, Error-value=9

Change-Id: I7bb4cdf03dd04f9caddc13cf7a70c913aa7e6e2b
Signed-off-by: Ladislav Borak <lborak@cisco.com>
Signed-off-by: Milos Fabian <milfabia@cisco.com>