test: add tcti-cmd test
test: add tcti-cmd test

Add test that runs a tpm2-tools command, tpm2 getrandom, with the
command tcti and the tpm2 send command. Skip if the tss2-tcti-cmd
package is not installed. This will keep this test backwards compat with
older versions of the TSS.

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

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