diff --git a/src/com/mirantis/mcp/Common.groovy b/src/com/mirantis/mcp/Common.groovy
index b501b04..7a29432 100644
--- a/src/com/mirantis/mcp/Common.groovy
+++ b/src/com/mirantis/mcp/Common.groovy
@@ -1,5 +1,8 @@
 package com.mirantis.mcp
 
+import java.util.zip.GZIPInputStream
+import java.util.zip.GZIPOutputStream
+
 @Grab(group='org.yaml', module='snakeyaml', version='1.17')
 import org.yaml.snakeyaml.Yaml
 
@@ -200,3 +203,19 @@
   } //else
 
 }
+
+def zipBase64(String s){
+    def targetStream = new ByteArrayOutputStream()
+    def zipStream = new GZIPOutputStream(targetStream)
+    zipStream.write(s.getBytes('UTF-8'))
+    zipStream.close()
+    def zippedBytes = targetStream.toByteArray()
+    targetStream.close()
+    return zippedBytes.encodeBase64()
+}
+
+def unzipBase64(String compressed){
+    def inflaterStream = new GZIPInputStream(new ByteArrayInputStream(compressed.decodeBase64()))
+    def uncompressedStr = inflaterStream.getText('UTF-8')
+    return uncompressedStr
+}
diff --git a/src/com/mirantis/mk/JenkinsUtils.groovy b/src/com/mirantis/mk/JenkinsUtils.groovy
index d092153..8b35aca 100644
--- a/src/com/mirantis/mk/JenkinsUtils.groovy
+++ b/src/com/mirantis/mk/JenkinsUtils.groovy
@@ -105,3 +105,71 @@
     }
     return params
 }
+
+/**
+ * Get list of causes actions for given build
+ *
+ * @param build Job build object (like, currentBuild.rawBuild)
+ * @return list of causes actions for given build
+ */
+@NonCPS
+def getBuildCauseActions(build) {
+    def causeAction = build.actions.find { it -> it instanceof hudson.model.CauseAction }
+    if(causeAction) {
+        return causeAction.causes
+    } else {
+        return []
+    }
+}
+
+/**
+ * Get list of builds, triggered by Gerrit with given build
+ * @param build Job build object (like, currentBuild.rawBuild)
+ * @return list of builds with names and numbers
+ */
+@NonCPS
+def getGerritBuildContext(build) {
+    def causes = getBuildCauseActions(build)
+    if (causes) {
+      def gerritTriggerCause = causes.find { cause ->
+          cause instanceof com.sonyericsson.hudson.plugins.gerrit.trigger.hudsontrigger.GerritCause
+      }
+      return gerritTriggerCause.context.getOtherBuilds()
+    } else {
+      return []
+    }
+}
+
+/**
+ * Wait for other jobs
+ * @param config config parameter:
+ *   builds - List of job build objects, which should be checked
+ *   checkBuilds - List of job names or regexps, which should be used to check provided builds list
+ *   regexp - Wheither to use regexp or simple string matching
+ */
+def waitForOtherBuilds(LinkedHashMap config){
+  def common = new com.mirantis.mk.Common()
+  def builds = config.get('builds')
+  def checkBuilds = config.get('checkBuilds')
+  def regexp = config.get('regexp', false)
+  def waitForBuilds = builds.findAll { build ->
+    def jobName = build.fullDisplayName.tokenize(' ')[0]
+    if (regexp) {
+      checkBuilds.find { jobName ==~ it }
+    } else {
+      jobName in checkBuilds
+    }
+  }
+  if (waitForBuilds) {
+    def waiting = true
+    common.infoMsg("Waiting for next jobs: ${waitForBuilds}")
+    while(waiting) {
+      waiting = false
+      waitForBuilds.each { job ->
+        if (job.inProgress) {
+          waiting = true
+        }
+      }
+    }
+  }
+}
diff --git a/src/com/mirantis/mk/Orchestrate.groovy b/src/com/mirantis/mk/Orchestrate.groovy
index dea0366..d18ebb5 100644
--- a/src/com/mirantis/mk/Orchestrate.groovy
+++ b/src/com/mirantis/mk/Orchestrate.groovy
@@ -284,7 +284,10 @@
 
     // Install sphinx server
     salt.enforceStateWithTest(master, "I@sphinx:server ${extra_tgt}", 'sphinx')
-    salt.enforceStateWithTest(master, "I@nginx:server ${extra_tgt}", 'salt.minion')
+    // Running minion states in a batch to avoid races related to certificates which are placed on glusterfs
+    // Details on races: https://mirantis.jira.com/browse/PROD-25796
+    // TODO: Run in parallel when glusterfs for certificates is dropped in cookiecutter
+    salt.enforceStateWithTest(master, "I@nginx:server ${extra_tgt}", 'salt.minion', '', true, true, 1)
     salt.enforceStateWithTest(master, "I@nginx:server ${extra_tgt}", 'nginx')
 
     // setup keystone service
diff --git a/src/com/mirantis/mk/SaltModelTesting.groovy b/src/com/mirantis/mk/SaltModelTesting.groovy
index 156034b..16e469c 100644
--- a/src/com/mirantis/mk/SaltModelTesting.groovy
+++ b/src/com/mirantis/mk/SaltModelTesting.groovy
@@ -83,8 +83,8 @@
   mcp_extra:
     source: "${extraRepoSource}"
   mcp_saltformulas:
-    source: "deb http://apt.mcp.mirantis.net/xenial ${distribRevision} salt salt-latest"
-    repo_key: "http://apt.mcp.mirantis.net/public.gpg"
+    source:   "deb [arch=amd64]  http://mirror.mirantis.com/${distribRevision}/salt-formulas/xenial xenial main"
+    repo_key: "http://mirror.mirantis.com/${distribRevision}/salt-formulas/xenial/archive-salt-formulas.key"
   ubuntu:
     source: "deb [arch=amd64] http://mirror.mirantis.com/${distribRevision}/ubuntu xenial main restricted universe"
   ubuntu-upd: