travis: support tpm2-tss

Running the "boot_aggregate" test without a physical TPM, requires
installing and initializing a software TPM.  For now, use the same
method of initializing the TPM, based on the IBM tss, for both the
IBM and Intel's tss.

Build both the IBM and INTEL's tss.

Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>

tests/install-tpm2-tss.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+git clone https://github.com/tpm2-software/tpm2-tss.git
+cd tpm2-tss
+./bootstrap
+./configure
+make -j$(nproc)
+sudo make install
+sudo ldconfig
+cd ..
+rm -rf tpm2-tss
+
+git clone https://github.com/tpm2-software/tpm2-tools.git
+cd tpm2-tools
+./bootstrap && ./configure --prefix=/usr
+make -j$(nproc)
+sudo make install
+cd ..
+rm -rf tpm2-tools