Set Salt 2017.7 as default Botstrap salt version

Change-Id: I77977c50030f2b63f4c353b919259eea67b3bcf5
diff --git a/bootstrap-salt.sh b/bootstrap-salt.sh
index 22ba484..5797151 100755
--- a/bootstrap-salt.sh
+++ b/bootstrap-salt.sh
@@ -524,14 +524,14 @@
     else
         __check_unparsed_options "$*"
 
-        if [ "$(echo "$1" | egrep '^(latest|1\.6|1\.7|2014\.1|2014\.7|2015\.5|2015\.8|2016\.3|2016\.11)$')" != "" ]; then
+        if [ "$(echo "$1" | egrep '^(latest|1\.6|1\.7|2014\.1|2014\.7|2015\.5|2015\.8|2016\.3|2016\.11|2017\.7)$')" != "" ]; then
             STABLE_REV="$1"
             shift
         elif [ "$(echo "$1" | egrep '^([0-9]*\.[0-9]*\.[0-9]*)$')" != "" ]; then
             STABLE_REV="archive/$1"
             shift
         else
-            echo "Unknown stable version: $1 (valid: 1.6, 1.7, 2014.1, 2014.7, 2015.5, 2015.8, 2016.3, 2016.11, latest, \$MAJOR.\$MINOR.\$PATCH)"
+            echo "Unknown stable version: $1 (valid: 1.6, 1.7, 2014.1, 2014.7, 2015.5, 2015.8, 2016.3, 2016.11, 2017.7, latest, \$MAJOR.\$MINOR.\$PATCH)"
             exit 1
         fi
     fi
@@ -2345,7 +2345,7 @@
         __enable_universe_repository || return 1
 
         # Versions starting with 2015.5.6 and 2015.8.1 are hosted at repo.saltstack.com
-        if [ "$(echo "$STABLE_REV" | egrep '^(2015\.5|2015\.8|2016\.3|2016\.11|latest|archive\/)')" = "" ]; then
+        if [ "$(echo "$STABLE_REV" | egrep '^(2015\.5|2015\.8|2016\.3|2016\.11|2017\.7|latest|archive\/)')" = "" ]; then
             if [ "$DISTRO_MAJOR_VERSION" -lt 14 ]; then
                 echoinfo "Installing Python Requests/Chardet from Chris Lea's PPA repository"
                 add-apt-repository -y "ppa:chris-lea/python-requests" || return 1
@@ -2436,7 +2436,7 @@
         fi
 
         # Versions starting with 2015.5.6, 2015.8.1 and 2016.3.0 are hosted at repo.saltstack.com
-        if [ "$(echo "$STABLE_REV" | egrep '^(2015\.5|2015\.8|2016\.3|2016\.11|latest|archive\/)')" != "" ]; then
+        if [ "$(echo "$STABLE_REV" | egrep '^(2015\.5|2015\.8|2016\.3|2016\.11|2017\.7|latest|archive\/)')" != "" ]; then
             # Workaround for latest non-LTS ubuntu
             if [ "$DISTRO_VERSION" = "16.10" ]; then
                 echowarn "Non-LTS Ubuntu detected, but stable packages requested. Trying packages from latest LTS release. You may experience problems."
@@ -2838,7 +2838,7 @@
         fi
 
         # Versions starting with 2015.8.7 and 2016.3.0 are hosted at repo.saltstack.com
-        if [ "$(echo "$STABLE_REV" | egrep '^(2015\.8|2016\.3|2016\.11|latest|archive\/201[5-6]\.)')" != "" ]; then
+        if [ "$(echo "$STABLE_REV" | egrep '^(2015\.8|2016\.3|2016\.11|2017\.7|latest|archive\/201[5-6]\.)')" != "" ]; then
             # amd64 is just a part of repository URI, 32-bit pkgs are hosted under the same location
             SALTSTACK_DEBIAN_URL="${HTTP_VAL}://repo.saltstack.com/apt/debian/${DISTRO_MAJOR_VERSION}/${__REPO_ARCH}/${STABLE_REV}"
             echo "deb $SALTSTACK_DEBIAN_URL wheezy main" > "/etc/apt/sources.list.d/saltstack.list"
@@ -2920,7 +2920,7 @@
         fi
 
         # Versions starting with 2015.5.6, 2015.8.1 and 2016.3.0 are hosted at repo.saltstack.com
-        if [ "$(echo "$STABLE_REV" | egrep '^(2015\.5|2015\.8|2016\.3|2016\.11|latest|archive\/201[5-6]\.)')" != "" ]; then
+        if [ "$(echo "$STABLE_REV" | egrep '^(2015\.5|2015\.8|2016\.3|2016\.11|2017\.7|latest|archive\/201[5-6]\.)')" != "" ]; then
             SALTSTACK_DEBIAN_URL="${HTTP_VAL}://repo.saltstack.com/apt/debian/${DISTRO_MAJOR_VERSION}/${__REPO_ARCH}/${STABLE_REV}"
             echo "deb $SALTSTACK_DEBIAN_URL jessie main" > "/etc/apt/sources.list.d/saltstack.list"