tpm2_createprimary: make hierarchy optional, default to TPM2_RH_OWNER
tpm2_createprimary: make hierarchy optional, default to TPM2_RH_OWNER

Make the hierarchy/H argument optional and default to TPM_RH_OWNER when one
hasn't been specified.

Signed-off-by: Joshua Lock <9750fc34162235efa862f2505c1a01f735e97af7@intel.com>

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