Drop support for out-of-tree DCAP SGX drivers

The out-of-tree DCAP drivers have the same userspace interface as the
upstream driver, so we can re-use the flow for upstream one.

Signed-off-by: Dmitrii Kuvaiskii <dmitrii.kuvaiskii@intel.com>

config.yaml.template

@@ -21,18 +21,18 @@ Gramine:
 # Specify the Intel SGX driver installed on your machine (more specifically, on the machine where
 # the graminized Docker container will run); there are several variants of the SGX driver:
 #
-#   - legacy out-of-tree driver: use something like the below values, but adjust the branch name
-#         Repository: "https://github.com/01org/linux-sgx-driver.git"
-#         Branch:     "sgx_driver_1.9"
-#
-#   - DCAP out-of-tree driver: use something like the below values
-#         Repository: "https://github.com/intel/SGXDataCenterAttestationPrimitives.git"
-#         Branch:     "DCAP_1.11 && cp -r driver/linux/* ."
+#   - upstream (in-kernel) driver: use empty values like below
+#         Repository: ""
+#         Branch:     ""
 #
-#   - DCAP in-kernel driver: use empty values like below
+#   - DCAP out-of-tree driver: same as above, use empty values
 #         Repository: ""
 #         Branch:     ""
 #
+#   - legacy out-of-tree driver: use something like the below values, but adjust the branch name
+#         Repository: "https://github.com/01org/linux-sgx-driver.git"
+#         Branch:     "sgx_driver_1.9"
+#
 SGXDriver:
     Repository: ""
     Branch:     ""

templates/Dockerfile.common.compile.template

@@ -13,7 +13,7 @@ RUN cd /gramine \
     && git fetch origin {{Gramine.Branch}} \
     && git checkout {{Gramine.Branch}}
 
-{% if SGXDriver.Repository %}
+{% if "linux-sgx-driver" in SGXDriver.Repository %}
 RUN cd /gramine \
     && git clone {{SGXDriver.Repository}} driver \
     && cd driver \
@@ -31,9 +31,7 @@ RUN cd /gramine \
        --buildtype={% if debug %}debug{% else %}release{% endif %} \
        -Ddirect=enabled -Dsgx=enabled \
        {% if Distro.startswith('ubuntu') %}-Ddcap=enabled{% endif %} \
-       {% if "SGXDataCenterAttestationPrimitives" in SGXDriver.Repository %} \
-       -Dsgx_driver=dcap1.10 -Dsgx_driver_include_path=/gramine/driver/driver/linux/include \
-       {% elif "linux-sgx-driver" in SGXDriver.Repository %} \
+       {% if "linux-sgx-driver" in SGXDriver.Repository %} \
        -Dsgx_driver=oot -Dsgx_driver_include_path=/gramine/driver \
        {% else %} \
        -Dsgx_driver=upstream -Dsgx_driver_include_path=/gramine/driver \