Changes

library: GTPv1C: fix ts_MM_Context{GSM,UMTS} templates

Set the values according to 3GPP TS 29.060 version 17.4.0 Release 17.

* Field 'spare' is defined as 'Spare 1111' in Table 40 (missing '1').
* Field 'spare1' is defined as 'Spare 111' in Table 41.
* Field 'security' must be set as per Table 47.

Change-Id: Ic8abb048f7c1fa795ee472820c5b88de0073dc66
Fixes: f95460b55 "GTP_Templates: Add templates for some GTPv1C IEs"
Fixes: fdde16846 "library: GTPv1C add ts_MM_ContextGSM"