Explicitly show the debos boot messages

New versions of fakemachine drop the bios, kernel and system boot
messages to give a more pleasant user experience. However for running in
CI especially when there are sometimes kernel issues in fakemachine this
is not the right thing. So turn back on the boot messages.

Backported original patch by Sjoerd Simons.

Signed-off-by: Denis Pynkin <denis.pynkin@collabora.com>

Jenkinsfile

@@ -84,6 +84,7 @@ def buildImage(architecture, type, boards, debosarguments = "", sysroot = false,
                    sh(script: """\
                    cd ${PIPELINE_VERSION}/${architecture}/${type}; \
                    debos ${debosarguments} \
+                    --show-boot \
                     -t type:${type} \
                     -t architecture:${architecture} \
                     -t suite:${release} \
@@ -111,6 +112,7 @@ def buildImage(architecture, type, boards, debosarguments = "", sysroot = false,
                               cd sysroot/${release}; \
                               cp -l ${WORKSPACE}/${PIPELINE_VERSION}/${architecture}/${type}/ospack_${release}-${architecture}-${type}_${PIPELINE_VERSION}.tar.gz .; \
                               debos ${debosarguments} \
+                                --show-boot \
                                 -t architecture:${architecture} \
                                 -t ospack:ospack_${release}-${architecture}-${type}_${PIPELINE_VERSION}.tar.gz \
                                 -t sysroot:${sysrootfile} \
@@ -129,6 +131,7 @@ def buildImage(architecture, type, boards, debosarguments = "", sysroot = false,
                       sh(script: """\
                           cd ${PIPELINE_VERSION}/${architecture}/${type}; \
                           debos ${debosarguments} \
+                            --show-boot \
                             -t architecture:${architecture} \
                             -t type:${type} \
                             -t ospack:ospack_${release}-${architecture}-${type}_${PIPELINE_VERSION}.tar.gz \
@@ -203,6 +206,7 @@ def buildOStree(architecture, type, board, debosarguments = "", production = fal
         sh(script: """\
            cd ${PIPELINE_VERSION}/${architecture}/${type}; \
            debos ${debosarguments} \
+           --show-boot \
            -t architecture:${architecture} \
            -t type:$type \
            -t board:$board \
@@ -234,6 +238,7 @@ def buildOStreeImage(architecture, type, board, debosarguments = "", production
         sh(script: """\
            cd ${PIPELINE_VERSION}/${architecture}/${type}; \
            debos ${debosarguments} \
+           --show-boot \
            -t architecture:${architecture} \
            -t type:$type \
            -t board:$board \
@@ -258,6 +263,7 @@ def buildContainer(architecture, type, board, debosarguments = "", production =
         sh(script: """\
            cd ${PIPELINE_VERSION}/${architecture}/${type}; \
            debos ${debosarguments} \
+           --show-boot \
            -t architecture:${architecture} \
            -t type:$type \
            -t suite:$release \