Fix sourcing openrc in collect

The openrc file is being sourced in a short lived
shell rather than in the shell of the sourcing code.

As a result the environment created by the 'source'
does not persist and the inventory request fails
which prevents collect from learning/validating
remote host names.

This update corrects that and makes the code block
involved in learning openrc variables a function
call rather than inline whenever collect_utils
is sourced.

Test Plan:

PASS: Verify collect all with no openrc already sourced
PASS: Verify collect select hosts (same no pre-openrc)
PASS: Verify collect self controller (same no pre-openrc)
PASS: Verify collect of self on compute

Change-Id: I41a097d9d751351f178a1366eb76dfb526c57b19
Closes-Bug: 1837412
Signed-off-by: Eric MacDonald <eric.macdonald@windriver.com>

tools/collector/centos/build_srpm.data

@@ -1,2 +1,2 @@
 SRC_DIR="scripts"
-TIS_PATCH_VER=27
+TIS_PATCH_VER=28

tools/collector/scripts/collect

@@ -84,6 +84,7 @@ fi
 
 # pull in common utils and environment
 source /usr/local/sbin/collect_utils
+source_openrc_if_needed
 
 function clean_up()
 {

tools/collector/scripts/collect_host

@@ -12,6 +12,7 @@
 # all collectors ; common and user defined.
 #
 source /usr/local/sbin/collect_utils
+source_openrc_if_needed
 
 #
 # parse input parameters

tools/collector/scripts/collect_utils

@@ -55,7 +55,8 @@ MIN_PERCENT_SPACE_REQUIRED=75
 COLLECT_LOG=/var/log/collect.log
 COLLECT_ERROR_LOG=/tmp/collect_error.log
 
-
+function source_openrc_if_needed
+{
     # get the node and subfunction types
     nodetype=""
     subfunction=""
@@ -77,12 +78,14 @@ if [ "$NODETYPE" == "controller" ] ; then
         # get local host activity state
         OPENRC="/etc/platform/openrc"
         if [ -e "${OPENRC}" ] ; then
-        rc=`source ${OPENRC}`
-        if [ "$rc" == "" ] ; then
+            OS_USERNAME=""
+            source ${OPENRC}
+            if [ "${OS_USERNAME}" != "" ] ; then
                 ACTIVE=true
             fi
         fi
     fi
+}
 
 
 # Setup an expect command completion file.