refactor(server): Simplify logic for default value generation #1051

Job	Run time
Debug Build & Unit Tests (gcc)	3m 33s
Debug Build & Unit Tests (gcc, 32bit)	3m 33s
Debug Build & Unit Tests without Subscriptions (gcc)	37s
Debug Build & Unit Tests with Diagnostics (gcc)	3m 5s
Debug Build & Unit Tests with multithreading (gcc)	3m 0s
Debug Build & Unit Tests with Alarms&Conditions (gcc)	11m 25s
Debug Build & Unit Tests (clang)	5m 52s
Debug Build & Unit Tests (tcc)	2m 33s
Encryption (MbedTLS) Build & Unit Tests (gcc)	2m 55s
PubSub Encryption (MbedTLS) Build & Unit Tests (gcc)	3m 52s
PubSub SKS Build & Unit Tests (gcc)	3m 27s
Encryption (OpenSSL) Build & Unit Tests (gcc)	2m 31s
Encryption (LibreSSL) Build & Unit Tests (gcc)	4m 58s
TPM Tool Build	2m 5s
Release Build	1m 4s
Amalgamation Build	1m 13s
Amalgamation Build with Multithreading	1m 0s
Valgrind Build & Unit Tests with MbedTLS (gcc)	18m 39s
Valgrind Build & Unit Tests with OpenSSL (gcc)	17m 32s
Valgrind Examples with MbedTLS (gcc)	1h 10m 28s
Valgrind Examples with OpenSSL (gcc)	1h 9m 55s
Clang Static Analyzer	5m 44s
Build All Companion Specifications	9m 12s
	4h 8m 13s

Provide feedback