Build gradle without signing info to be used with MS App Center

build.gradle

repositories {
    maven { url 'https://raw.github.com/applanga/sdk-android/master/maven/releases/' }
    maven { url 'https://jitpack.io' }
}

buildscript {
    repositories {
        jcenter()
        google()
        maven {
            url 'https://raw.github.com/applanga/sdk-android/master/maven/releases/'
        }

    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.3'
        classpath "io.realm:realm-gradle-plugin:5.1.0"
        classpath 'org.ajoberstar:grgit:2.0.0'
        classpath 'com.applanga.android:plugin:2.0.91'

    }
}

apply plugin: 'com.android.application'
apply plugin: 'org.ajoberstar.grgit'

android {
    compileSdkVersion 26
    defaultConfig {
        applicationId "com.vsac.ankasani.vsacas"
        minSdkVersion 26
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        manifestPlaceholders = [GSM_SENDER_ID: "${System.env.GSM_SENDER_ID}", GOOGLE_MAPS_API_KEY: "${System.env.GOOGLE_MAPS_API_KEY}"]
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            //Other optimizations
            debuggable false
            jniDebuggable false
            renderscriptDebuggable false
            pseudoLocalesEnabled false
            zipAlignEnabled false
            shrinkResources false
        }
        debug {
            debuggable true
        }
        staging {
            initWith debug
            manifestPlaceholders = [hostName:"internal.example.com"]
            applicationIdSuffix ".debugStaging"
        }
    }
     
    productFlavors {

}
}


dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.android.support:design:26.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    androidTestCompile('com.microsoft.appcenter:espresso-test-extension:1.2')
}