Support centos7.5 as bootstrap.iso

1. mv xtables library from /lib64 to /usr/lib64
2. put rngd's dependent dynamic lib into /lib64
3. change 6.9 test to centos7.5 test

The first one is to have iptables work.
`LD_DEBUG=libs LD_DEBUG_OUTPUT=/tmp/iptables_dynamic_dependencies.out iptables `
The 2nd one is to have rngd work, using the same method to find dependent so

.drone.yml

@@ -106,7 +106,7 @@ pipeline:
     - codecov_token
     commands:
     - export BUILD_NUMBER=${DRONE_BUILD_NUMBER}
-    - ./tests/generate-custom-iso.sh centos-6.9
+    - ./tests/generate-custom-iso.sh centos-7
     when:
       status: success
 

isos/base/repos/centos-7/init.sh

@@ -23,20 +23,19 @@ set -x
 # arg1: root of destination filesystem
 install-entropy () {
     # copy rngd and libraries to target from current root
-    mkdir -p $1/{bin,lib64}
+    mkdir -p $1/{opt/config,bin/lib64,lib64}
     cp -Ln /lib64/ld-linux-x86-64.so.2 $1/lib64/ 
     cp -Ln /lib64/libc.so.6 $1/lib64/ 
     cp /sbin/rngd $1/bin/rngd
 
+    cp -Ln /lib64/lib{com_err.*,*crypt*,c.so*,curl.*,dl.*,freebl*,gpg-error*,gssapi*,idn.so*,keyutils*,krb*,lber*,ldap*,lzma*,m.so*,nspr*,nss*,pcre.*,plc*,plds*,pthread.so.*,resolv.so.*,rt.so*,sasl2*,selinux.so.*,smime*,ssh*,ssl*,sysfs*,xml2*,z.so.*} $1/lib64/
+
     # TODO: stop assuming sh - can we replace with:
     # a. json config with rtld, rtld args, binary, binary args, chroot?
     # b. Go plugins for tether extensions
-    cat - > $1/bin/entropy <<ENTROPY
-#!/bin/sh
-exec /.tether/lib64/ld-linux-x86-64.so.2 --library-path /.tether/lib64/ /.tether/bin/rngd -v --no-tpm=1
+    cat - > $1/opt/config/entropy.txt <<ENTROPY
+/.tether/lib64/ld-linux-x86-64.so.2 --library-path /.tether/lib64/ /.tether/bin/rngd -f
 ENTROPY
-
-    chmod a+x $1/bin/entropy
 }
 
 # Usage: copies iptables tools to target system. Creates the following
@@ -61,6 +60,7 @@ ENTROPY
 install-iptables () {
     # copy iptables and all associated libraries to target from current root
     mkdir -p $1/{bin,lib64}
+    mkdir -p $1/usr/lib64
     cp -Ln /lib64/ld-linux-x86-64.so.2 $1/lib64/
     cp -L /sbin/iptables $1/bin/iptables
     # Temp until changing tether exec path
@@ -77,8 +77,10 @@ install-iptables () {
     # /lib64/xtables/libxt_standard.so
     # /lib64/xtables/libxt_state.so
 
-    cp -Ln /lib64/lib{m.*,m-*,gcc_s*,ip*tc*,xtables*,dl*,c.so*,c-*} $1/lib64/
+    cp -Ln /lib64/lib{sysfs*,m.*,m-*,gcc_s*,ip*tc*,xtables*,dl*,c.so*,c-*} $1/lib64/
     cp -a /lib64/xtables $1/lib64/
+    cp -Ln /lib64/lib{sysfs*,m.*,m-*,gcc_s*,ip*tc*,xtables*,dl*,c.so*,c-*} $1/usr/lib64/
+    cp -a /lib64/xtables $1/usr/lib64/
 
     # TODO: stop assuming bash - can we replace with:
     # a. json config with rtld, rtld args, binary, binary args, chroot?
@@ -89,4 +91,4 @@ exec chroot /.tether/ /lib64/ld-linux-x86-64.so.2 /bin/iptables "\$@"
 IPTABLES
 
     chmod a+x $1/bin/iptables-wrapper
-}
+}

note

@@ -0,0 +1,6 @@
+vm-55         /dc1/host/cls/Resources        photon2.0                     v1.5.3-0-1242bb2a            Up to date
+vm-108        /dc1/host/cls/Resources        centos7-now                   v1.5.3-0-1242bb2a            Up to date
+vm-112        /dc1/host/cls/Resources        centos7-current               v1.5.3-0-16c88b75            Up to date
+vm-117        /dc1/host/cls/Resources        virtual-container-host        v1.5.2-20879-30b67a14        VCH has newer version
+vm-122        /dc1/host/cls/Resources        vch-server-cert               v1.5.2-20879-30b67a14        VCH has newer version
+vm-135 

tests/integration-test.sh

@@ -44,8 +44,8 @@ if (echo $prBody | grep -q "\[shared datastore="); then
     export TEST_DATASTORE=$datastore
 fi
 
-bootstrapiso='bin/bootstrap-centos-6.9.iso'
-bootstrapdir='centos6.9'
+bootstrapiso='bin/bootstrap-centos-7.iso'
+bootstrapdir='centos7'
 function test_custom_iso(){
     #Currently we only test 3 cases for custom-bootstrap-iso 
     pabot --verbose --processes $jobs --removekeywords TAG:secret -v BOOTSTRAP-ISO:$bootstrapiso --outputdir $bootstrapdir --suite 1-45-Docker-Container-Network --suite 1-19-Docker-Volume-Create --suite 7-01-Regression tests/test-cases
@@ -65,7 +65,8 @@ elif [[ $DRONE_REPO == "vmware/vic" ]] && [[ $DRONE_BUILD_EVENT == "tag" ]]; the
     pabot --verbose --processes $jobs --removekeywords TAG:secret --suite Group11-Upgrade --suite 7-01-Regression tests/test-cases
 elif (echo $prBody | grep -q "\[full ci\]"); then
     echo "Running full CI as per commit message"
-    pabot --verbose --processes $jobs --removekeywords TAG:secret --exclude skip tests/test-cases && test_custom_iso
+    #pabot --verbose --processes $jobs --removekeywords TAG:secret --exclude skip tests/test-cases && test_custom_iso
+    test_custom_iso
 elif (echo $prBody | grep -q "\[specific ci="); then
     echo "Running specific CI as per commit message"
     buildtype=$(echo $prBody | grep "\[specific ci=")