tests/createprimary.sh: swap keyedhash for xor
tests/createprimary.sh: swap keyedhash for xor

Based on scheme and attribute checks in the TPM, keyedhash
with a NULL schemedoesn't work by default. Swap it for xor.

Signed-off-by: William Roberts <60148e894dabf0b83bde1d460768794cd453c455@intel.com>

01org/tpm2.0-tools,martinezjavier/tpm2-tools,01org/tpm2.0-tools,martinezjavier/tpm2-tools,martinezjavier/tpm2-tools,martinezjavier/tpm2-tools,01org/tpm2.0-tools