common: move PKG-specific variables out of the testconfig generating … #293

Job	Run time
Basic build	2m 29s
Source checkers	44s
Ubuntu / Linux (N=1 OS=ubuntu OS_VER=22.04 FAULT_INJECTION=1 TEST_BUILD=debug)	21m 36s
Ubuntu / Linux (N=2 OS=ubuntu OS_VER=22.04 FAULT_INJECTION=1 TEST_BUILD=nondebug UBSAN=1)	19m 28s
Ubuntu / Linux (N=3 OS=ubuntu OS_VER=22.04 PMDK_CC=clang PMDK_CXX=clang++ TEST_BUILD=debug)	20m 22s
Ubuntu / Linux (N=4 OS=ubuntu OS_VER=22.04 PMDK_CC=clang PMDK_CXX=clang++ TEST_BUILD=nondebug AUTO_DOC_UPD...	16m 28s
Ubuntu / Linux (N=5 OS=ubuntu OS_VER=22.04 COVERAGE=1 FAULT_INJECTION=1 TEST_BUILD=debug)	15m 4s
CentOS / CentOS (OS_VER=7 FAULT_INJECTION=1 TEST_BUILD=debug)	18m 20s
CentOS / CentOS (OS_VER=7 TEST_BUILD=nondebug)	17m 41s
CentOS / CentOS (OS_VER=7 TEST_BUILD=debug NDCTL_ENABLE=n)	17m 52s
CentOS / CentOS (OS_VER=7 TEST_BUILD=nondebug NDCTL_ENABLE=n)	13m 56s
CentOS / CentOS (OS_VER=stream TEST_BUILD=debug)	19m 32s
CentOS / CentOS (OS_VER=stream FAULT_INJECTION=1 TEST_BUILD=debug)	19m 45s
CentOS / CentOS (OS_VER=stream TEST_BUILD=nondebug)	20m 42s
	3h 43m 59s

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